Task 1: Import the titanic540.csv dataset into R

read.csv(file="http://www.personal.psu.edu/dlp/w540/titanic540.csv")
##      pclass survived    sex age sibsp parch   fare embarked
## 1         1        1 female  29     0     0 211.34        S
## 2         1        1   male   1     1     2 151.55        S
## 3         1        0 female   2     1     2 151.55        S
## 4         1        0   male  30     1     2 151.55        S
## 5         1        0 female  25     1     2 151.55        S
## 6         1        1   male  48     0     0  26.55        S
## 7         1        1 female  63     1     0  77.96        S
## 8         1        0   male  39     0     0   0.00        S
## 9         1        1 female  53     2     0  51.48        S
## 10        1        0   male  71     0     0  49.50        C
## 11        1        0   male  47     1     0 227.53        C
## 12        1        1 female  18     1     0 227.53        C
## 13        1        1 female  24     0     0  69.30        C
## 14        1        1 female  26     0     0  78.85        S
## 15        1        1   male  80     0     0  30.00        S
## 16        1        0   male  NA     0     0  25.93        S
## 17        1        0   male  24     0     1 247.52        C
## 18        1        1 female  50     0     1 247.52        C
## 19        1        1 female  32     0     0  76.29        C
## 20        1        0   male  36     0     0  75.24        C
## 21        1        1   male  37     1     1  52.55        S
## 22        1        1 female  47     1     1  52.55        S
## 23        1        1   male  26     0     0  30.00        C
## 24        1        1 female  42     0     0 227.53        C
## 25        1        1 female  29     0     0 221.78        S
## 26        1        0   male  25     0     0  26.00        C
## 27        1        1   male  25     1     0  91.08        C
## 28        1        1 female  19     1     0  91.08        C
## 29        1        1 female  35     0     0 135.63        S
## 30        1        1   male  28     0     0  26.55        S
## 31        1        0   male  45     0     0  35.50        S
## 32        1        1   male  40     0     0  31.00        C
## 33        1        1 female  30     0     0 164.87        S
## 34        1        1 female  58     0     0  26.55        S
## 35        1        0   male  42     0     0  26.55        S
## 36        1        1 female  45     0     0 262.38        C
## 37        1        1 female  22     0     1  55.00        S
## 38        1        1   male  NA     0     0  26.55        S
## 39        1        0   male  41     0     0  30.50        S
## 40        1        0   male  48     0     0  50.50        C
## 41        1        0   male  NA     0     0  39.60        C
## 42        1        1 female  44     0     0  27.72        C
## 43        1        1 female  59     2     0  51.48        S
## 44        1        1 female  60     0     0  76.29        C
## 45        1        1 female  41     0     0 134.50        C
## 46        1        0   male  45     0     0  26.55        S
## 47        1        0   male  NA     0     0  31.00        S
## 48        1        1   male  42     0     0  26.29        S
## 49        1        1 female  53     0     0  27.45        C
## 50        1        1   male  36     0     1 512.33        C
## 51        1        1 female  58     0     1 512.33        C
## 52        1        0   male  33     0     0   5.00        S
## 53        1        0   male  28     0     0  47.10        S
## 54        1        0   male  17     0     0  47.10        S
## 55        1        1   male  11     1     2 120.00        S
## 56        1        1 female  14     1     2 120.00        S
## 57        1        1   male  36     1     2 120.00        S
## 58        1        1 female  36     1     2 120.00        S
## 59        1        0   male  49     0     0  26.00        S
## 60        1        1 female  NA     0     0  27.72        C
## 61        1        0   male  36     1     0  78.85        S
## 62        1        1 female  76     1     0  78.85        S
## 63        1        0   male  46     1     0  61.18        S
## 64        1        1 female  47     1     0  61.18        S
## 65        1        1   male  27     1     0  53.10        S
## 66        1        1 female  33     1     0  53.10        S
## 67        1        1 female  36     0     0 262.38        C
## 68        1        1 female  30     0     0  86.50        S
## 69        1        1   male  45     0     0  29.70        C
## 70        1        1 female  NA     0     1  55.00        S
## 71        1        0   male  NA     0     0   0.00        S
## 72        1        0   male  27     1     0 136.78        C
## 73        1        1 female  26     1     0 136.78        C
## 74        1        1 female  22     0     0 151.55        S
## 75        1        0   male  NA     0     0  52.00        S
## 76        1        0   male  47     0     0  25.59        S
## 77        1        1 female  39     1     1  83.16        C
## 78        1        0   male  37     1     1  83.16        C
## 79        1        1 female  64     0     2  83.16        C
## 80        1        1 female  55     2     0  25.70        S
## 81        1        0   male  NA     0     0  26.55        S
## 82        1        0   male  70     1     1  71.00        S
## 83        1        1 female  36     0     2  71.00        S
## 84        1        1 female  64     1     1  26.55        S
## 85        1        0   male  39     1     0  71.28        C
## 86        1        1 female  38     1     0  71.28        C
## 87        1        1   male  51     0     0  26.55        S
## 88        1        1   male  27     0     0  30.50        S
## 89        1        1 female  33     0     0 151.55        S
## 90        1        0   male  31     1     0  52.00        S
## 91        1        1 female  27     1     2  52.00        S
## 92        1        1   male  31     1     0  57.00        S
## 93        1        1 female  17     1     0  57.00        S
## 94        1        1   male  53     1     1  81.86        S
## 95        1        1   male   4     0     2  81.86        S
## 96        1        1 female  54     1     1  81.86        S
## 97        1        0   male  50     1     0 106.43        C
## 98        1        1 female  27     1     1 247.52        C
## 99        1        1 female  48     1     0 106.43        C
## 100       1        1 female  48     1     0  39.60        C
## 101       1        1   male  49     1     0  56.93        C
## 102       1        0   male  39     0     0  29.70        C
## 103       1        1 female  23     0     1  83.16        C
## 104       1        1 female  38     0     0 227.53        C
## 105       1        1 female  54     1     0  78.27        C
## 106       1        0 female  36     0     0  31.68        C
## 107       1        0   male  NA     0     0 221.78        S
## 108       1        1 female  NA     0     0  31.68        S
## 109       1        1 female  NA     0     0 110.88        C
## 110       1        1   male  36     0     0  26.39        S
## 111       1        0   male  30     0     0  27.75        C
## 112       1        1 female  24     3     2 263.00        S
## 113       1        1 female  28     3     2 263.00        S
## 114       1        1 female  23     3     2 263.00        S
## 115       1        0   male  19     3     2 263.00        S
## 116       1        0   male  64     1     4 263.00        S
## 117       1        1 female  60     1     4 263.00        S
## 118       1        1 female  30     0     0  56.93        C
## 119       1        0   male  NA     0     0  26.55        S
## 120       1        1   male  50     2     0 133.65        S
## 121       1        1   male  43     1     0  27.72        C
## 122       1        1 female  NA     1     0 133.65        S
## 123       1        1 female  22     0     2  49.50        C
## 124       1        1   male  60     1     1  79.20        C
## 125       1        1 female  48     1     1  79.20        C
## 126       1        0   male  NA     0     0   0.00        S
## 127       1        0   male  37     1     0  53.10        S
## 128       1        1 female  35     1     0  53.10        S
## 129       1        0   male  47     0     0  38.50        S
## 130       1        1 female  35     0     0 211.50        C
## 131       1        1 female  22     0     1  59.40        C
## 132       1        1 female  45     0     1  59.40        C
## 133       1        0   male  24     0     0  79.20        C
## 134       1        1   male  49     1     0  89.10        C
## 135       1        1 female  NA     1     0  89.10        C
## 136       1        0   male  71     0     0  34.65        C
## 137       1        1   male  53     0     0  28.50        C
## 138       1        1 female  19     0     0  30.00        S
## 139       1        0   male  38     0     1 153.46        S
## 140       1        1 female  58     0     1 153.46        S
## 141       1        1   male  23     0     1  63.36        C
## 142       1        1 female  45     0     1  63.36        C
## 143       1        0   male  46     0     0  79.20        C
## 144       1        1   male  25     1     0  55.44        C
## 145       1        1 female  25     1     0  55.44        C
## 146       1        1   male  48     1     0  76.73        C
## 147       1        1 female  49     1     0  76.73        C
## 148       1        0   male  NA     0     0  42.40        S
## 149       1        0   male  45     1     0  83.48        S
## 150       1        1 female  35     1     0  83.48        S
## 151       1        0   male  40     0     0   0.00        S
## 152       1        1   male  27     0     0  76.73        C
## 153       1        1   male  NA     0     0  30.00        S
## 154       1        1 female  24     0     0  83.16        C
## 155       1        0   male  55     1     1  93.50        S
## 156       1        1 female  52     1     1  93.50        S
## 157       1        0   male  42     0     0  42.50        S
## 158       1        0   male  NA     0     0  51.86        S
## 159       1        0   male  55     0     0  50.00        S
## 160       1        1 female  16     0     1  57.98        C
## 161       1        1 female  44     0     1  57.98        C
## 162       1        1 female  51     1     0  77.96        S
## 163       1        0   male  42     1     0  52.00        S
## 164       1        1 female  35     1     0  52.00        S
## 165       1        1   male  35     0     0  26.55        C
## 166       1        1   male  38     1     0  90.00        S
## 167       1        0   male  NA     0     0  30.70        C
## 168       1        1 female  35     1     0  90.00        S
## 169       1        1 female  38     0     0  80.00         
## 170       1        0 female  50     0     0  28.71        C
## 171       1        1   male  49     0     0   0.00        S
## 172       1        0   male  46     0     0  26.00        S
## 173       1        0   male  50     0     0  26.00        S
## 174       1        0   male  33     0     0 211.50        C
## 175       1        0   male  58     0     0  29.70        C
## 176       1        0   male  41     1     0  51.86        S
## 177       1        1 female  NA     1     0  51.86        S
## 178       1        1   male  42     1     0  52.55        S
## 179       1        1 female  45     1     0  52.55        S
## 180       1        0   male  NA     0     0  26.55        S
## 181       1        1 female  39     0     0 211.34        S
## 182       1        1 female  49     0     0  25.93        S
## 183       1        1 female  30     0     0 106.43        C
## 184       1        1   male  35     0     0 512.33        C
## 185       1        0   male  NA     0     0  27.72        C
## 186       1        0   male  42     0     0  26.55        S
## 187       1        1 female  55     0     0  27.72        C
## 188       1        1 female  16     0     1  39.40        S
## 189       1        1 female  51     0     1  39.40        S
## 190       1        0   male  29     0     0  30.00        S
## 191       1        1 female  21     0     0  77.96        S
## 192       1        0   male  30     0     0  45.50        S
## 193       1        1 female  58     0     0 146.52        C
## 194       1        1 female  15     0     1 211.34        S
## 195       1        0   male  30     0     0  26.00        S
## 196       1        1 female  16     0     0  86.50        S
## 197       1        1   male  NA     0     0  29.70        C
## 198       1        0   male  19     1     0  53.10        S
## 199       1        1 female  18     1     0  53.10        S
## 200       1        1 female  24     0     0  49.50        C
## 201       1        0   male  46     0     0  75.24        C
## 202       1        0   male  54     0     0  51.86        S
## 203       1        1   male  36     0     0  26.29        S
## 204       1        0   male  28     1     0  82.17        C
## 205       1        1 female  NA     1     0  82.17        C
## 206       1        0   male  65     0     0  26.55        S
## 207       1        0   male  44     2     0  90.00        Q
## 208       1        1 female  33     1     0  90.00        Q
## 209       1        1 female  37     1     0  90.00        Q
## 210       1        1   male  30     1     0  57.75        C
## 211       1        0   male  55     0     0  30.50        S
## 212       1        0   male  47     0     0  42.40        S
## 213       1        0   male  37     0     1  29.70        C
## 214       1        1 female  31     1     0 113.28        C
## 215       1        1 female  23     1     0 113.28        C
## 216       1        0   male  58     0     2 113.28        C
## 217       1        1 female  19     0     2  26.28        S
## 218       1        0   male  64     0     0  26.00        S
## 219       1        1 female  39     0     0 108.90        C
## 220       1        1   male  NA     0     0  25.74        C
## 221       1        1 female  22     0     1  61.98        C
## 222       1        0   male  65     0     1  61.98        C
## 223       1        0   male  29     0     0  27.72        C
## 224       1        0   male  NA     0     0   0.00        S
## 225       1        0   male  46     0     0  28.50        S
## 226       1        0   male  23     0     0  93.50        S
## 227       1        0   male  29     1     0  66.60        S
## 228       1        1 female  22     1     0  66.60        S
## 229       1        0   male  18     1     0 108.90        C
## 230       1        1 female  17     1     0 108.90        C
## 231       1        1 female  30     0     0  93.50        S
## 232       1        1   male  52     0     0  30.50        S
## 233       1        0   male  47     0     0  52.00        S
## 234       1        1 female  56     0     1  83.16        C
## 235       1        0   male  38     0     0   0.00        S
## 236       1        1   male  NA     0     0  39.60        S
## 237       1        0   male  22     0     0 135.63        C
## 238       1        0   male  NA     0     0 227.53        C
## 239       1        1 female  43     0     1 211.34        S
## 240       1        0   male  31     0     0  50.50        S
## 241       1        1   male  45     0     0  26.55        S
## 242       1        0   male  NA     0     0  50.00        S
## 243       1        1 female  33     0     0  27.72        C
## 244       1        0   male  46     0     0  79.20        C
## 245       1        0   male  36     0     0  40.13        C
## 246       1        1 female  33     0     0  86.50        S
## 247       1        0   male  55     1     0  59.40        C
## 248       1        1 female  54     1     0  59.40        C
## 249       1        0   male  33     0     0  26.55        S
## 250       1        1   male  13     2     2 262.38        C
## 251       1        1 female  18     2     2 262.38        C
## 252       1        1 female  21     2     2 262.38        C
## 253       1        0   male  61     1     3 262.38        C
## 254       1        1 female  48     1     3 262.38        C
## 255       1        1   male  NA     0     0  30.50        S
## 256       1        1 female  24     0     0  69.30        C
## 257       1        1   male  NA     0     0  26.00        S
## 258       1        1 female  35     1     0  57.75        C
## 259       1        1 female  30     0     0  31.00        C
## 260       1        1   male  34     0     0  26.55        S
## 261       1        1 female  40     0     0 153.46        S
## 262       1        1   male  35     0     0  26.29        S
## 263       1        0   male  50     1     0  55.90        S
## 264       1        1 female  39     1     0  55.90        S
## 265       1        1   male  56     0     0  35.50        C
## 266       1        1   male  28     0     0  35.50        S
## 267       1        0   male  56     0     0  26.55        S
## 268       1        0   male  56     0     0  30.70        C
## 269       1        0   male  24     1     0  60.00        S
## 270       1        0   male  NA     0     0  26.00        S
## 271       1        1 female  18     1     0  60.00        S
## 272       1        1   male  24     1     0  82.27        S
## 273       1        1 female  23     1     0  82.27        S
## 274       1        1   male   6     0     2 134.50        C
## 275       1        1   male  45     1     1 134.50        C
## 276       1        1 female  40     1     1 134.50        C
## 277       1        0   male  57     1     0 146.52        C
## 278       1        1 female  NA     1     0 146.52        C
## 279       1        1   male  32     0     0  30.50        C
## 280       1        0   male  62     0     0  26.55        S
## 281       1        1   male  54     1     0  55.44        C
## 282       1        1 female  43     1     0  55.44        C
## 283       1        1 female  52     1     0  78.27        C
## 284       1        0   male  NA     0     0  27.72        C
## 285       1        1 female  62     0     0  80.00         
## 286       1        0   male  67     1     0 221.78        S
## 287       1        0 female  63     1     0 221.78        S
## 288       1        0   male  61     0     0  32.32        S
## 289       1        1 female  48     0     0  25.93        S
## 290       1        1 female  18     0     2  79.65        S
## 291       1        0   male  52     1     1  79.65        S
## 292       1        1 female  39     1     1  79.65        S
## 293       1        1   male  48     1     0  52.00        S
## 294       1        1 female  NA     1     0  52.00        S
## 295       1        0   male  49     1     1 110.88        C
## 296       1        1   male  17     0     2 110.88        C
## 297       1        1 female  39     1     1 110.88        C
## 298       1        1 female  NA     0     0  79.20        C
## 299       1        1   male  31     0     0  28.54        C
## 300       1        0   male  40     0     0  27.72        C
## 301       1        0   male  61     0     0  33.50        S
## 302       1        0   male  47     0     0  34.02        S
## 303       1        1 female  35     0     0 512.33        C
## 304       1        0   male  64     1     0  75.25        C
## 305       1        1 female  60     1     0  75.25        C
## 306       1        0   male  60     0     0  26.55        S
## 307       1        0   male  54     0     1  77.29        S
## 308       1        0   male  21     0     1  77.29        S
## 309       1        1 female  55     0     0 135.63        C
## 310       1        1 female  31     0     2 164.87        S
## 311       1        0   male  57     1     1 164.87        S
## 312       1        1 female  45     1     1 164.87        S
## 313       1        0   male  50     1     1 211.50        C
## 314       1        0   male  27     0     2 211.50        C
## 315       1        1 female  50     1     1 211.50        C
## 316       1        1 female  21     0     0  26.55        S
## 317       1        0   male  51     0     1  61.38        C
## 318       1        1   male  21     0     1  61.38        C
## 319       1        0   male  NA     0     0  35.00        S
## 320       1        1 female  31     0     0 134.50        C
## 321       1        1   male  NA     0     0  35.50        S
## 322       1        0   male  62     0     0  26.55        S
## 323       1        1 female  36     0     0 135.63        C
## 324       2        0   male  30     1     0  24.00        C
## 325       2        1 female  28     1     0  24.00        C
## 326       2        0   male  30     0     0  13.00        S
## 327       2        0   male  18     0     0  11.50        S
## 328       2        0   male  25     0     0  10.50        S
## 329       2        0   male  34     1     0  26.00        S
## 330       2        1 female  36     1     0  26.00        S
## 331       2        0   male  57     0     0  13.00        S
## 332       2        0   male  18     0     0  11.50        S
## 333       2        0   male  23     0     0  10.50        S
## 334       2        1 female  36     0     0  13.00        S
## 335       2        0   male  28     0     0  10.50        S
## 336       2        0   male  51     0     0  12.53        S
## 337       2        1   male  32     1     0  26.00        S
## 338       2        1 female  19     1     0  26.00        S
## 339       2        0   male  28     0     0  26.00        S
## 340       2        1   male   1     2     1  39.00        S
## 341       2        1 female   4     2     1  39.00        S
## 342       2        1 female  12     2     1  39.00        S
## 343       2        1 female  36     0     3  39.00        S
## 344       2        1   male  34     0     0  13.00        S
## 345       2        1 female  19     0     0  13.00        S
## 346       2        0   male  23     0     0  13.00        S
## 347       2        0   male  26     0     0  13.00        S
## 348       2        0   male  42     0     0  13.00        S
## 349       2        0   male  27     0     0  13.00        S
## 350       2        1 female  24     0     0  13.00        S
## 351       2        1 female  15     0     2  39.00        S
## 352       2        0   male  60     1     1  39.00        S
## 353       2        1 female  40     1     1  39.00        S
## 354       2        1 female  20     1     0  26.00        S
## 355       2        0   male  25     1     0  26.00        S
## 356       2        1 female  36     0     0  13.00        S
## 357       2        0   male  25     0     0  13.00        S
## 358       2        0   male  42     0     0  13.00        S
## 359       2        1 female  42     0     0  13.00        S
## 360       2        1   male   1     0     2  29.00        S
## 361       2        1   male  26     1     1  29.00        S
## 362       2        1 female  22     1     1  29.00        S
## 363       2        1 female  35     0     0  21.00        S
## 364       2        0   male  NA     0     0   0.00        S
## 365       2        0   male  19     0     0  13.00        S
## 366       2        0 female  44     1     0  26.00        S
## 367       2        0   male  54     1     0  26.00        S
## 368       2        0   male  52     0     0  13.50        S
## 369       2        0   male  37     1     0  26.00        S
## 370       2        0 female  29     1     0  26.00        S
## 371       2        1 female  25     1     1  30.00        S
## 372       2        1 female  45     0     2  30.00        S
## 373       2        0   male  29     1     0  26.00        S
## 374       2        1 female  28     1     0  26.00        S
## 375       2        0   male  29     0     0  10.50        S
## 376       2        0   male  28     0     0  13.00        S
## 377       2        1   male  24     0     0  10.50        S
## 378       2        1 female   8     0     2  26.25        S
## 379       2        0   male  31     1     1  26.25        S
## 380       2        1 female  31     1     1  26.25        S
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## 755       3        0   male  21     2     0  24.15        S
## 756       3        0   male  17     2     0   8.05        S
## 757       3        0   male  NA     1     0  16.10        S
## 758       3        1 female  NA     1     0  16.10        S
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## 766       3        1 female  33     1     2  20.58        S
## 767       3        0   male  25     0     0   7.90        S
## 768       3        0   male  NA     0     0   7.90        S
## 769       3        0   male  NA     0     0   7.90        S
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## 771       3        0   male  36     0     0   7.25        S
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## 774       3        0   male  42     0     0   8.66        S
## 775       3        0   male  43     0     0   7.90        S
## 776       3        0   male  NA     0     0   7.23        C
## 777       3        0   male  32     0     0   7.75        Q
## 778       3        1   male  19     0     0   8.05        S
## 779       3        1 female  30     0     0  12.48        S
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## 788       3        0   male  16     0     0   7.78        S
## 789       3        0   male  45     0     0   6.98        S
## 790       3        0   male  NA     0     0   7.23        C
## 791       3        0   male  39     0     2   7.23        C
## 792       3        0   male  17     1     1   7.23        C
## 793       3        0   male  15     1     1   7.23        C
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## 797       3        0   male  41     0     0  15.10        S
## 798       3        0   male  41     0     0   7.75        Q
## 799       3        1   male  NA     0     0   7.05        S
## 800       3        0   male  18     0     0   7.80        S
## 801       3        0 female  NA     0     0   7.75        Q
## 802       3        0   male  NA     0     0   7.75        Q
## 803       3        0   male  NA     0     0   6.95        Q
## 804       3        0   male  26     0     0   7.88        Q
## 805       3        0   male  NA     0     0   7.75        Q
## 806       3        1   male  NA     0     0  56.50        S
## 807       3        0 female  21     2     2  34.38        S
## 808       3        0 female   9     2     2  34.38        S
## 809       3        0   male  NA     0     0   8.05        S
## 810       3        0   male  18     2     2  34.38        S
## 811       3        0   male  16     1     3  34.38        S
## 812       3        0 female  48     1     3  34.38        S
## 813       3        0   male  NA     0     0   7.75        Q
## 814       3        0   male  NA     0     0   7.25        S
## 815       3        0   male  25     0     0   7.74        Q
## 816       3        0   male  NA     0     0  14.50        S
## 817       3        0   male  NA     0     0   7.90        C
## 818       3        0   male  22     0     0   8.05        S
## 819       3        1 female  16     0     0   7.73        Q
## 820       3        1 female  NA     0     0   7.75        Q
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## 822       3        0   male  33     1     1  20.53        S
## 823       3        0   male  41     0     0   7.85        S
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## 834       3        0   male  51     0     0   8.05        S
## 835       3        0   male  32     0     0   8.36        S
## 836       3        0   male  NA     0     0   8.05        S
## 837       3        0   male  20     0     0   9.85        S
## 838       3        0   male  37     2     0   7.93        S
## 839       3        0   male  28     2     0   7.93        S
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## 841       3        0 female  24     0     0   8.85        S
## 842       3        0 female  17     0     0   7.73        Q
## 843       3        0   male  NA     1     0  19.97        S
## 844       3        0   male  NA     1     0  19.97        S
## 845       3        0   male  28     1     0  15.85        S
## 846       3        1 female  24     1     0  15.85        S
## 847       3        0   male  20     0     0   9.50        S
## 848       3        0   male  24     0     0   7.23        C
## 849       3        0   male  41     2     0  14.11        S
## 850       3        0   male  26     1     0   7.85        S
## 851       3        0   male  21     0     0   7.85        S
## 852       3        1 female  45     1     0  14.11        S
## 853       3        0 female  NA     0     0   7.55        S
## 854       3        0   male  25     0     0   7.25        S
## 855       3        0   male  NA     0     0   6.86        Q
## 856       3        0   male  11     0     0  18.79        C
## 857       3        1 female  NA     0     0   7.75        Q
## 858       3        1   male  27     0     0   6.98        S
## 859       3        1   male  NA     0     0  56.50        S
## 860       3        0 female  18     0     0   6.75        Q
## 861       3        1 female  26     0     0   7.93        S
## 862       3        0 female  23     0     0   7.93        S
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## 864       3        0   male  28     0     0   7.90        S
## 865       3        0 female  28     0     0   7.78        S
## 866       3        0 female  NA     0     0   7.75        Q
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## 868       3        1 female  22     1     1  12.29        S
## 869       3        0   male  43     0     0   6.45        S
## 870       3        0   male  28     0     0  22.53        S
## 871       3        1 female  27     0     0   7.93        S
## 872       3        0   male  NA     0     0   7.75        Q
## 873       3        1 female  NA     0     0   8.05        S
## 874       3        0   male  42     0     0   7.65        S
## 875       3        1   male  NA     0     0   7.89        S
## 876       3        0   male  30     0     0   7.23        C
## 877       3        0   male  NA     0     0   7.90        S
## 878       3        0 female  27     1     0   7.93        S
## 879       3        0 female  25     1     0   7.93        S
## 880       3        0   male  NA     0     0   7.90        S
## 881       3        1   male  29     0     0   7.90        C
## 882       3        1   male  21     0     0   7.80        S
## 883       3        0   male  NA     0     0   7.05        S
## 884       3        0   male  20     0     0   7.85        S
## 885       3        0   male  48     0     0   7.85        S
## 886       3        0   male  17     1     0   7.05        S
## 887       3        1 female  NA     0     0   7.75        Q
## 888       3        1   male  NA     0     0   8.11        S
## 889       3        0   male  34     0     0   6.50        S
## 890       3        1   male  26     0     0   7.78        S
## 891       3        0   male  22     0     0   7.80        S
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## 894       3        0   male  29     0     0   7.85        S
## 895       3        1   male   4     1     1  11.13        S
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## 897       3        0   male  49     0     0   0.00        S
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## 899       3        0   male  19     0     0   0.00        S
## 900       3        1 female  27     0     2  11.13        S
## 901       3        0   male  NA     1     2  23.45        S
## 902       3        0 female  NA     1     2  23.45        S
## 903       3        0   male  NA     1     2  23.45        S
## 904       3        0 female  NA     1     2  23.45        S
## 905       3        0   male  23     0     0   7.90        S
## 906       3        1   male  32     0     0   7.85        S
## 907       3        0   male  27     0     0   7.85        S
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## 912       3        0   male  21     0     0   8.43        S
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## 914       3        1   male  21     0     0   7.80        S
## 915       3        0   male  33     0     0   7.85        S
## 916       3        0   male  22     0     0   7.52        S
## 917       3        1 female   4     0     1  13.42        C
## 918       3        1   male  39     0     1  13.42        C
## 919       3        0   male  NA     0     0   7.23        C
## 920       3        0   male  19     0     0   7.23        C
## 921       3        0   male  NA     0     0   7.75        Q
## 922       3        0   male  NA     0     0   7.25        S
## 923       3        1 female  NA     0     0   7.75        Q
## 924       3        1 female  NA     0     0   7.75        Q
## 925       3        0   male  35     0     0   7.83        Q
## 926       3        0   male  44     0     0   8.05        S
## 927       3        1   male  NA     0     0   7.75        Q
## 928       3        0   male  NA     1     0  14.45        C
## 929       3        0 female  NA     1     0  14.45        C
## 930       3        0   male  NA     1     0   7.75        Q
## 931       3        0   male  NA     1     0   7.75        Q
## 932       3        0   male  NA     0     0   7.74        Q
## 933       3        0 female  22     2     0   8.66        S
## 934       3        0   male  26     2     0   8.66        S
## 935       3        1 female   4     0     2  22.03        S
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## 940       3        0 female  36     0     2  12.18        S
## 941       3        0   male  NA     0     0   7.90        C
## 942       3        1   male  25     0     0   7.23        C
## 943       3        0   male  NA     0     0   7.23        C
## 944       3        0 female  37     0     0   9.59        S
## 945       3        0   male  NA     0     0   7.90        S
## 946       3        1   male  NA     0     0  56.50        S
## 947       3        0   male  NA     0     0  56.50        S
## 948       3        1 female  22     0     0   7.25        S
## 949       3        0   male  NA     0     0   7.75        Q
## 950       3        1   male  26     0     0  56.50        S
## 951       3        0   male  29     0     0   9.48        S
## 952       3        0   male  29     0     0   7.78        S
## 953       3        0   male  22     0     0   7.78        S
## 954       3        1   male  22     0     0   7.23        C
## 955       3        0   male  NA     3     1  25.47        S
## 956       3        0 female  NA     3     1  25.47        S
## 957       3        0 female  NA     3     1  25.47        S
## 958       3        0 female  NA     3     1  25.47        S
## 959       3        0 female  NA     0     4  25.47        S
## 960       3        0   male  32     0     0   7.93        S
## 961       3        0   male  35     0     0   6.44        C
## 962       3        0 female  NA     1     0  15.50        Q
## 963       3        0   male  NA     1     0  15.50        Q
## 964       3        0   male  36     0     0   0.00        S
## 965       3        0   male  39     0     0  24.15        S
## 966       3        0   male  24     0     0   9.50        S
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## 971       3        1   male  20     1     0   7.93        S
## 972       3        0   male  NA     0     0   7.88        Q
## 973       3        0   male  28     0     0  56.50        S
## 974       3        0   male  NA     0     0   7.55        S
## 975       3        0   male  30     1     0  16.10        S
## 976       3        0 female  26     1     0  16.10        S
## 977       3        0   male  NA     0     0   7.88        S
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## 981       3        1 female  23     0     0   7.85        S
## 982       3        1   male  32     0     0   7.58        S
## 983       3        0   male  NA     0     0   7.90        S
## 984       3        0   male  NA     0     0   7.55        S
## 985       3        1 female  NA     0     0   7.75        Q
## 986       3        1   male  24     0     0   7.14        S
## 987       3        0   male  22     0     0   7.13        S
## 988       3        0 female  NA     0     0   7.88        Q
## 989       3        0   male  NA     0     0   7.75        Q
## 990       3        0   male  NA     0     0   8.05        S
## 991       3        0   male  29     0     0   7.93        S
## 992       3        1   male  NA     0     0   7.23        C
## 993       3        0 female  31     0     0   7.75        Q
## 994       3        1 female  NA     0     0   7.74        Q
## 995       3        0   male  NA     0     0   7.23        C
## 996       3        0   male  35     0     0   7.90        C
## 997       3        0   male  33     0     0   7.90        S
## 998       3        1 female  NA     0     0   7.23        C
## 999       3        0   male  NA     0     0   7.90        C
## 1000      3        1 female  NA     0     0   7.75        Q
## 1001      3        1   male  NA     0     0   7.75        Q
## 1002      3        1 female  NA     2     0  23.25        Q
## 1003      3        1 female  NA     2     0  23.25        Q
## 1004      3        1   male  NA     2     0  23.25        Q
## 1005      3        1 female  NA     0     0   7.79        Q
## 1006      3        0   male  NA     0     0  15.50        Q
## 1007      3        1 female  NA     0     0   7.88        Q
## 1008      3        1 female  15     0     0   8.03        Q
## 1009      3        0 female  35     0     0   7.75        Q
## 1010      3        0   male  NA     0     0   7.75        Q
## 1011      3        0   male  24     1     0  16.10        S
## 1012      3        0 female  19     1     0  16.10        S
## 1013      3        0 female  NA     0     0   7.75        Q
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## 1016      3        0   male  56     0     0   8.05        S
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## 1018      3        1   male  21     0     0   7.78        S
## 1019      3        0   male  NA     0     0   8.05        S
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## 1021      3        0   male  21     0     0   7.90        S
## 1022      3        0   male  28     0     0   7.90        S
## 1023      3        0   male  NA     0     0   7.90        S
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## 1026      3        1   male   6     0     1  12.48        S
## 1027      3        1 female  27     0     1  12.48        S
## 1028      3        0   male  NA     0     0   8.05        S
## 1029      3        1 female  NA     1     0  24.15        Q
## 1030      3        0   male  NA     1     0  24.15        Q
## 1031      3        0   male  NA     0     0   8.46        Q
## 1032      3        0   male  34     0     0   8.05        S
## 1033      3        0   male  NA     0     0   7.75        Q
## 1034      3        1   male  NA     0     0   7.78        S
## 1035      3        1   male  NA     1     1  15.25        C
## 1036      3        1   male  NA     1     1  15.25        C
## 1037      3        1 female  NA     0     2  15.25        C
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## 1039      3        0   male  NA     0     0   8.05        S
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## 1041      3        1 female  24     0     0   7.75        Q
## 1042      3        0   male  NA     0     0   8.05        S
## 1043      3        1 female  NA     1     0  15.50        Q
## 1044      3        1 female  NA     1     0  15.50        Q
## 1045      3        1 female  NA     0     0  15.50        Q
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## 1047      3        0   male  22     0     0   7.90        S
## 1048      3        1 female  15     0     0   7.23        C
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## 1050      3        1   male  20     1     1  15.74        C
## 1051      3        1 female  19     1     1  15.74        C
## 1052      3        0   male  33     0     0   8.05        S
## 1053      3        0   male  NA     0     0   7.90        S
## 1054      3        0   male  NA     0     0   7.23        C
## 1055      3        0 female  NA     0     0   7.75        Q
## 1056      3        0   male  NA     0     0   7.90        S
## 1057      3        1   male  12     1     0  11.24        C
## 1058      3        1 female  14     1     0  11.24        C
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## 1068      3        1 female  22     0     0   7.75        S
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## 1070      3        0   male  NA     1     0  15.50        Q
## 1071      3        0   male  NA     0     0   7.83        Q
## 1072      3        1 female  NA     1     0  15.50        Q
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## 1075      3        0   male  NA     0     0   7.75        Q
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## 1077      3        0 female  NA     0     0   7.75        Q
## 1078      3        1 female  NA     0     0   7.75        Q
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## 1082      3        1 female  NA     0     0   7.83        Q
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## 1084      3        0   male  28     0     0  22.53        S
## 1085      3        0   male  42     0     1   8.40        S
## 1086      3        0   male  NA     0     0   7.31        S
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## 1088      3        0   male  28     0     0   7.85        S
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## 1094      3        0   male  16     0     0   9.22        S
## 1095      3        1 female  31     0     0   8.68        S
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## 1098      3        0   male   6     3     1  21.08        S
## 1099      3        0 female   3     3     1  21.08        S
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## 1109      3        0   male  19     0     0  14.50        S
## 1110      3        0   male  NA     0     0   8.71        C
## 1111      3        0   male  32     0     0   7.90        S
## 1112      3        0   male   1     1     1  13.78        S
## 1113      3        0 female   3     1     1  13.78        S
## 1114      3        0 female  26     0     2  13.78        S
## 1115      3        0   male  NA     0     0   7.00        S
## 1116      3        0   male  NA     0     0   7.78        S
## 1117      3        0   male  NA     0     0   8.05        S
## 1118      3        0   male  21     0     0   7.93        S
## 1119      3        0   male  25     0     0   7.93        S
## 1120      3        0   male  22     0     0   7.25        S
## 1121      3        1   male  25     1     0   7.78        S
## 1122      3        1   male  NA     1     1  22.36        C
## 1123      3        1 female  NA     1     1  22.36        C
## 1124      3        1 female  NA     0     2  22.36        C
## 1125      3        0 female  NA     0     0   8.14        Q
## 1126      3        0   male  24     0     0   8.05        S
## 1127      3        0 female  28     0     0   7.90        S
## 1128      3        0   male  19     0     0   7.90        S
## 1129      3        0   male  NA     0     0   7.90        S
## 1130      3        0   male  25     1     0   7.78        S
## 1131      3        0 female  18     0     0   7.78        S
## 1132      3        1   male  32     0     0   8.05        S
## 1133      3        0   male  NA     0     0   7.90        S
## 1134      3        0   male  17     0     0   8.66        S
## 1135      3        0   male  24     0     0   8.66        S
## 1136      3        0   male  NA     0     0   7.90        S
## 1137      3        0 female  NA     0     0   8.11        S
## 1138      3        0   male  NA     0     0   7.23        C
## 1139      3        0   male  NA     0     0   7.25        S
## 1140      3        0   male  38     0     0   7.90        S
## 1141      3        0   male  21     0     0   8.05        S
## 1142      3        0   male  10     4     1  29.13        Q
## 1143      3        0   male   4     4     1  29.13        Q
## 1144      3        0   male   7     4     1  29.13        Q
## 1145      3        0   male   2     4     1  29.13        Q
## 1146      3        0   male   8     4     1  29.13        Q
## 1147      3        0 female  39     0     5  29.13        Q
## 1148      3        0 female  22     0     0  39.69        S
## 1149      3        0   male  35     0     0   7.13        S
## 1150      3        1 female  NA     0     0   7.72        Q
## 1151      3        0   male  NA     0     0  14.50        S
## 1152      3        0 female  NA     0     0  14.50        S
## 1153      3        0   male  50     1     0  14.50        S
## 1154      3        0 female  47     1     0  14.50        S
## 1155      3        0   male  NA     0     0   8.05        S
## 1156      3        0   male  NA     0     0   7.78        S
## 1157      3        0 female   2     1     1  20.21        S
## 1158      3        0   male  18     1     1  20.21        S
## 1159      3        0 female  41     0     2  20.21        S
## 1160      3        1 female  NA     0     0   8.05        S
## 1161      3        0   male  50     0     0   8.05        S
## 1162      3        0   male  16     0     0   8.05        S
## 1163      3        1   male  NA     0     0   7.75        Q
## 1164      3        0   male  NA     0     0  24.15        Q
## 1165      3        0   male  NA     0     0   7.23        C
## 1166      3        0   male  25     0     0   7.23        C
## 1167      3        0   male  NA     0     0   7.23        C
## 1168      3        0   male  NA     0     0   7.73        Q
## 1169      3        0   male  NA     0     0   7.58        S
## 1170      3        0   male  39     0     0   7.25        S
## 1171      3        0   male  NA     8     2  69.55        S
## 1172      3        0   male  15     8     2  69.55        S
## 1173      3        0 female  NA     8     2  69.55        S
## 1174      3        0 female  NA     8     2  69.55        S
## 1175      3        0 female  NA     8     2  69.55        S
## 1176      3        0 female  NA     8     2  69.55        S
## 1177      3        0   male  NA     8     2  69.55        S
## 1178      3        0   male  NA     8     2  69.55        S
## 1179      3        0   male  NA     8     2  69.55        S
## 1180      3        0   male  NA     1     9  69.55        S
## 1181      3        0 female  NA     1     9  69.55        S
## 1182      3        0   male  24     0     0   9.33        S
## 1183      3        1 female  21     0     0   7.65        S
## 1184      3        0   male  39     0     0   7.93        S
## 1185      3        0   male  NA     2     0  21.68        C
## 1186      3        0   male  NA     2     0  21.68        C
## 1187      3        0   male  NA     2     0  21.68        C
## 1188      3        1 female   1     1     1  16.70        S
## 1189      3        1 female  24     0     2  16.70        S
## 1190      3        1 female   4     1     1  16.70        S
## 1191      3        1   male  25     0     0   9.50        S
## 1192      3        0   male  20     0     0   8.05        S
## 1193      3        0   male  25     0     0   8.05        S
## 1194      3        0   male  NA     0     0   7.73        Q
## 1195      3        0   male  NA     0     0   7.90        S
## 1196      3        0   male  NA     0     0   7.75        Q
## 1197      3        1   male  29     0     0   9.50        S
## 1198      3        0   male  NA     0     0  15.10        S
## 1199      3        1 female  NA     0     0   7.78        Q
## 1200      3        0   male  NA     0     0   8.05        S
## 1201      3        0   male  NA     0     0   8.05        S
## 1202      3        0   male  22     0     0   7.23        C
## 1203      3        0   male  NA     0     0   8.05        S
## 1204      3        0   male  40     0     0   7.90        S
## 1205      3        0   male  21     0     0   7.93        S
## 1206      3        1 female  18     0     0   7.50        S
## 1207      3        0   male   4     3     2  27.90        S
## 1208      3        0   male  10     3     2  27.90        S
## 1209      3        0 female   9     3     2  27.90        S
## 1210      3        0 female   2     3     2  27.90        S
## 1211      3        0   male  40     1     4  27.90        S
## 1212      3        0 female  45     1     4  27.90        S
## 1213      3        0   male  NA     0     0   7.90        S
## 1214      3        0   male  NA     0     0   8.05        S
## 1215      3        0   male  NA     0     0   8.66        S
## 1216      3        0   male  NA     0     0   7.75        Q
## 1217      3        1 female  NA     0     0   7.73        Q
## 1218      3        0   male  19     0     0   7.65        S
## 1219      3        0   male  30     0     0   8.05        S
## 1220      3        0   male  NA     0     0   8.05        S
## 1221      3        0   male  32     0     0   8.05        S
## 1222      3        0   male  NA     0     0   7.90        S
## 1223      3        0   male  33     0     0   8.66        C
## 1224      3        1 female  23     0     0   7.55        S
## 1225      3        0   male  21     0     0   8.05        S
## 1226      3        0   male  61     0     0     NA        S
## 1227      3        0   male  19     0     0   7.90        S
## 1228      3        0 female  22     0     0   9.84        S
## 1229      3        1   male  31     0     0   7.93        S
## 1230      3        0   male  27     0     0   8.66        S
## 1231      3        0 female   2     0     1  10.46        S
## 1232      3        0 female  29     1     1  10.46        S
## 1233      3        1   male  16     0     0   8.05        S
## 1234      3        1   male  44     0     0   7.93        S
## 1235      3        0   male  25     0     0   7.05        S
## 1236      3        0   male  74     0     0   7.78        S
## 1237      3        1   male  14     0     0   9.23        S
## 1238      3        0   male  24     0     0   7.80        S
## 1239      3        1   male  25     0     0   7.80        S
## 1240      3        0   male  34     0     0   8.05        S
## 1241      3        1   male   0     0     1   8.52        C
## 1242      3        0   male  NA     1     0   6.44        C
## 1243      3        0   male  NA     0     0   6.44        C
## 1244      3        0   male  NA     0     0   7.23        C
## 1245      3        1 female  16     1     1   8.52        C
## 1246      3        0   male  NA     0     0   8.05        S
## 1247      3        0   male  NA     1     0  16.10        S
## 1248      3        1 female  NA     1     0  16.10        S
## 1249      3        0   male  32     0     0   7.93        S
## 1250      3        0   male  NA     0     0   7.75        Q
## 1251      3        0   male  NA     0     0   7.90        S
## 1252      3        0   male  31     0     0   8.05        S
## 1253      3        0   male  44     0     0   8.05        S
## 1254      3        0   male  NA     0     0   7.23        C
## 1255      3        1   male  25     0     0   0.00        S
## 1256      3        0   male  NA     0     0   7.23        C
## 1257      3        1   male   7     1     1  15.25        C
## 1258      3        1 female   9     1     1  15.25        C
## 1259      3        1 female  29     0     2  15.25        C
## 1260      3        0   male  36     0     0   7.90        S
## 1261      3        1 female  18     0     0   9.84        S
## 1262      3        1 female  63     0     0   9.59        S
## 1263      3        0   male  NA     1     1  14.50        S
## 1264      3        0   male  12     1     1  14.50        S
## 1265      3        0   male  41     0     2  14.50        S
## 1266      3        0 female  10     0     2  24.15        S
## 1267      3        0   male  36     1     1  24.15        S
## 1268      3        0 female  30     1     1  24.15        S
## 1269      3        0   male  NA     0     0   9.50        S
## 1270      3        0   male  33     0     0   9.50        S
## 1271      3        0   male  28     0     0   9.50        S
## 1272      3        0   male  28     0     0   9.50        S
## 1273      3        0   male  47     0     0   9.00        S
## 1274      3        0 female  18     2     0  18.00        S
## 1275      3        0   male  31     3     0  18.00        S
## 1276      3        0   male  16     2     0  18.00        S
## 1277      3        0 female  31     1     0  18.00        S
## 1278      3        1   male  22     0     0   7.23        C
## 1279      3        0   male  20     0     0   7.85        S
## 1280      3        0 female  14     0     0   7.85        S
## 1281      3        0   male  22     0     0   7.90        S
## 1282      3        0   male  22     0     0   9.00        S
## 1283      3        0   male  NA     0     0   8.05        S
## 1284      3        0   male  NA     0     0   7.55        S
## 1285      3        0   male  NA     0     0   8.05        S
## 1286      3        0   male  33     0     0   9.50        S
## 1287      3        1 female  38     0     0   7.23        C
## 1288      3        0   male  51     0     0   7.75        S
## 1289      3        0   male  18     1     0   6.50        S
## 1290      3        0   male  21     1     0   6.50        S
## 1291      3        1 female  47     1     0   7.00        S
## 1292      3        0   male  NA     0     0   8.71        S
## 1293      3        0   male  NA     0     0   7.55        S
## 1294      3        0   male  NA     0     0   8.05        S
## 1295      3        0   male  29     0     0  16.10        S
## 1296      3        0   male  21     0     0   7.25        S
## 1297      3        0   male  27     0     0   8.66        S
## 1298      3        0   male  NA     0     0   7.25        S
## 1299      3        0   male  36     0     0   9.50        S
## 1300      3        0   male  27     1     0  14.45        C
## 1301      3        1 female  15     1     0  14.45        C
## 1302      3        0   male  46     0     0   7.23        C
## 1303      3        0   male  NA     0     0   7.23        C
## 1304      3        0   male  NA     0     0  14.46        C
## 1305      3        0 female  15     1     0  14.45        C
## 1306      3        0 female  NA     1     0  14.45        C
## 1307      3        0   male  27     0     0   7.23        C
## 1308      3        0   male  27     0     0   7.23        C
## 1309      3        0   male  29     0     0   7.88        S

Task 2: Convert the titanic540.csv dataset into dataframe as a “tibble”

titanic_csv <-tbl_df(read.csv(file="http://www.personal.psu.edu/dlp/w540/titanic540.csv"))
titanic_csv
## # A tibble: 1,309 x 8
##    pclass survived    sex   age sibsp parch   fare embarked
##     <int>    <int> <fctr> <int> <int> <int>  <dbl>   <fctr>
##  1      1        1 female    29     0     0 211.34        S
##  2      1        1   male     1     1     2 151.55        S
##  3      1        0 female     2     1     2 151.55        S
##  4      1        0   male    30     1     2 151.55        S
##  5      1        0 female    25     1     2 151.55        S
##  6      1        1   male    48     0     0  26.55        S
##  7      1        1 female    63     1     0  77.96        S
##  8      1        0   male    39     0     0   0.00        S
##  9      1        1 female    53     2     0  51.48        S
## 10      1        0   male    71     0     0  49.50        C
## # ... with 1,299 more rows

Task 3: Calculate the proportion of surviving passengers

survivors <- filter(titanic_csv, survived == 1)
glimpse(survivors)
## Observations: 500
## Variables: 8
## $ pclass   <int> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,...
## $ survived <int> 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,...
## $ sex      <fctr> female, male, male, female, female, female, female, ...
## $ age      <int> 29, 1, 48, 63, 53, 18, 24, 26, 80, 50, 32, 37, 47, 26...
## $ sibsp    <int> 0, 1, 0, 1, 2, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1,...
## $ parch    <int> 0, 2, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0,...
## $ fare     <dbl> 211.34, 151.55, 26.55, 77.96, 51.48, 227.53, 69.30, 7...
## $ embarked <fctr> S, S, S, S, S, C, C, S, S, C, C, S, S, C, C, S, C, C...
#Total number of survivors =  500
#Total passengers (as per tibble) 1309
survivor_prop <-500/1309 
survivor_prop
## [1] 0.381971

Proportion of survivors = 38.1971% of total passengers: NOT good odds.

Task 4: Calculate proportion of surviving passengers by sex

titanic_csv %>% 
  group_by(sex) %>% 
  summarize(num=n(), na.rm=TRUE)
## # A tibble: 2 x 3
##      sex   num na.rm
##   <fctr> <int> <lgl>
## 1 female   466  TRUE
## 2   male   843  TRUE
titanic_csv%>% 
  group_by(sex)%>% 
  summarize(prop_survived=mean(survived, na.rm=TRUE))
## # A tibble: 2 x 2
##      sex prop_survived
##   <fctr>         <dbl>
## 1 female     0.7274678
## 2   male     0.1909846

Task 5: Calculate the mean (average) age of surviving female passengers

titanic_csv%>% 
  filter(survived==1, sex=="female", age)%>%
  summarise(avgagexxsurvivors=mean(age))
## # A tibble: 1 x 1
##   avgagexxsurvivors
##               <dbl>
## 1          29.92096

The average age of female survivors is 29.92. So tragic - so young.

Task 6: Calculate the number of surviving passengers 10 years old or younger

under10 <-titanic_csv%>% 
  filter(survived==1, age < 10)
under10
## # A tibble: 50 x 8
##    pclass survived    sex   age sibsp parch   fare embarked
##     <int>    <int> <fctr> <int> <int> <int>  <dbl>   <fctr>
##  1      1        1   male     1     1     2 151.55        S
##  2      1        1   male     4     0     2  81.86        S
##  3      1        1   male     6     0     2 134.50        C
##  4      2        1   male     1     2     1  39.00        S
##  5      2        1 female     4     2     1  39.00        S
##  6      2        1   male     1     0     2  29.00        S
##  7      2        1 female     8     0     2  26.25        S
##  8      2        1   male     8     1     1  36.75        S
##  9      2        1   male     8     0     2  32.50        S
## 10      2        1   male     1     1     1  14.50        S
## # ... with 40 more rows
nrow(under10)
## [1] 50

50 who died were younger than 10

Task 7: Calculate the maximum, minimum, and median age of surviving passengers 10 years or older

survivors_age10up <-titanic_csv%>% 
  filter(survived==1, age > 9)
survivors_age10up
## # A tibble: 377 x 8
##    pclass survived    sex   age sibsp parch   fare embarked
##     <int>    <int> <fctr> <int> <int> <int>  <dbl>   <fctr>
##  1      1        1 female    29     0     0 211.34        S
##  2      1        1   male    48     0     0  26.55        S
##  3      1        1 female    63     1     0  77.96        S
##  4      1        1 female    53     2     0  51.48        S
##  5      1        1 female    18     1     0 227.53        C
##  6      1        1 female    24     0     0  69.30        C
##  7      1        1 female    26     0     0  78.85        S
##  8      1        1   male    80     0     0  30.00        S
##  9      1        1 female    50     0     1 247.52        C
## 10      1        1 female    32     0     0  76.29        C
## # ... with 367 more rows
summary(survivors_age10up)
##      pclass         survived     sex           age            sibsp       
##  Min.   :1.000   Min.   :1   female:267   Min.   :11.00   Min.   :0.0000  
##  1st Qu.:1.000   1st Qu.:1   male  :110   1st Qu.:22.00   1st Qu.:0.0000  
##  Median :2.000   Median :1                Median :30.00   Median :0.0000  
##  Mean   :1.809   Mean   :1                Mean   :32.27   Mean   :0.4403  
##  3rd Qu.:3.000   3rd Qu.:1                3rd Qu.:40.00   3rd Qu.:1.0000  
##  Max.   :3.000   Max.   :1                Max.   :80.00   Max.   :4.0000  
##      parch             fare        embarked
##  Min.   :0.0000   Min.   :  0.00    :  2   
##  1st Qu.:0.0000   1st Qu.: 12.48   C:120   
##  Median :0.0000   Median : 26.55   Q: 13   
##  Mean   :0.4271   Mean   : 56.71   S:242   
##  3rd Qu.:1.0000   3rd Qu.: 76.29           
##  Max.   :5.0000   Max.   :512.33

maximum age is 80, minimum age is 11, median age is 30

Task 8: Calculate the proportion of surviving passengers by port of embarkation

head(titanic_csv)
## # A tibble: 6 x 8
##   pclass survived    sex   age sibsp parch   fare embarked
##    <int>    <int> <fctr> <int> <int> <int>  <dbl>   <fctr>
## 1      1        1 female    29     0     0 211.34        S
## 2      1        1   male     1     1     2 151.55        S
## 3      1        0 female     2     1     2 151.55        S
## 4      1        0   male    30     1     2 151.55        S
## 5      1        0 female    25     1     2 151.55        S
## 6      1        1   male    48     0     0  26.55        S
embarksurvivors <-titanic_csv%>% 
  filter(survived==1) %>%
  group_by(embarked) 
embarksurvivors
## # A tibble: 500 x 8
## # Groups:   embarked [4]
##    pclass survived    sex   age sibsp parch   fare embarked
##     <int>    <int> <fctr> <int> <int> <int>  <dbl>   <fctr>
##  1      1        1 female    29     0     0 211.34        S
##  2      1        1   male     1     1     2 151.55        S
##  3      1        1   male    48     0     0  26.55        S
##  4      1        1 female    63     1     0  77.96        S
##  5      1        1 female    53     2     0  51.48        S
##  6      1        1 female    18     1     0 227.53        C
##  7      1        1 female    24     0     0  69.30        C
##  8      1        1 female    26     0     0  78.85        S
##  9      1        1   male    80     0     0  30.00        S
## 10      1        1 female    50     0     1 247.52        C
## # ... with 490 more rows
summarise (embarksurvivors)
## # A tibble: 4 x 1
##   embarked
##     <fctr>
## 1         
## 2        C
## 3        Q
## 4        S