DATASET ONE WAY

Kanker payudara adalah kanker yang paling umum terjadi pada wanita di dunia. Kanker ini menyumbang 25% dari semua kasus kanker, dan mempengaruhi lebih dari 2,1 juta orang pada tahun 2015 saja. Kanker ini dimulai ketika sel-sel dalam payudara mulai tumbuh di luar kendali. Sel-sel ini biasanya membentuk tumor yang dapat dilihat melalui sinar-X atau dirasakan sebagai benjolan di area payudara.

data1 <- read.csv("data1.csv")
head(data1)
##         id diagnosis radius_mean texture_mean perimeter_mean area_mean
## 1   842302         M       17.99        10.38         122.80    1001.0
## 2   842517         M       20.57        17.77         132.90    1326.0
## 3 84300903         M       19.69        21.25         130.00    1203.0
## 4 84348301         M       11.42        20.38          77.58     386.1
## 5 84358402         M       20.29        14.34         135.10    1297.0
## 6   843786         M       12.45        15.70          82.57     477.1
##   smoothness_mean compactness_mean concavity_mean concave.points_mean
## 1         0.11840          0.27760         0.3001             0.14710
## 2         0.08474          0.07864         0.0869             0.07017
## 3         0.10960          0.15990         0.1974             0.12790
## 4         0.14250          0.28390         0.2414             0.10520
## 5         0.10030          0.13280         0.1980             0.10430
## 6         0.12780          0.17000         0.1578             0.08089
##   symmetry_mean fractal_dimension_mean radius_se texture_se perimeter_se
## 1        0.2419                0.07871    1.0950     0.9053        8.589
## 2        0.1812                0.05667    0.5435     0.7339        3.398
## 3        0.2069                0.05999    0.7456     0.7869        4.585
## 4        0.2597                0.09744    0.4956     1.1560        3.445
## 5        0.1809                0.05883    0.7572     0.7813        5.438
## 6        0.2087                0.07613    0.3345     0.8902        2.217
##   area_se smoothness_se compactness_se concavity_se concave.points_se
## 1  153.40      0.006399        0.04904      0.05373           0.01587
## 2   74.08      0.005225        0.01308      0.01860           0.01340
## 3   94.03      0.006150        0.04006      0.03832           0.02058
## 4   27.23      0.009110        0.07458      0.05661           0.01867
## 5   94.44      0.011490        0.02461      0.05688           0.01885
## 6   27.19      0.007510        0.03345      0.03672           0.01137
##   symmetry_se fractal_dimension_se radius_worst texture_worst perimeter_worst
## 1     0.03003             0.006193        25.38         17.33          184.60
## 2     0.01389             0.003532        24.99         23.41          158.80
## 3     0.02250             0.004571        23.57         25.53          152.50
## 4     0.05963             0.009208        14.91         26.50           98.87
## 5     0.01756             0.005115        22.54         16.67          152.20
## 6     0.02165             0.005082        15.47         23.75          103.40
##   area_worst smoothness_worst compactness_worst concavity_worst
## 1     2019.0           0.1622            0.6656          0.7119
## 2     1956.0           0.1238            0.1866          0.2416
## 3     1709.0           0.1444            0.4245          0.4504
## 4      567.7           0.2098            0.8663          0.6869
## 5     1575.0           0.1374            0.2050          0.4000
## 6      741.6           0.1791            0.5249          0.5355
##   concave.points_worst symmetry_worst fractal_dimension_worst  X
## 1               0.2654         0.4601                 0.11890 NA
## 2               0.1860         0.2750                 0.08902 NA
## 3               0.2430         0.3613                 0.08758 NA
## 4               0.2575         0.6638                 0.17300 NA
## 5               0.1625         0.2364                 0.07678 NA
## 6               0.1741         0.3985                 0.12440 NA

UJI KLASIK

UJI NORMALITAS

Uji normalitas multivariat merupakan uji yang mengasumsikan bahwa variabel terikat terdistribusi secara normal multivariat dalam setiap kelompok.

data1_fix <- data.frame(cbind(data1$smoothness_mean,data1$compactness_mean))
data1_fix
##          X1      X2
## 1   0.11840 0.27760
## 2   0.08474 0.07864
## 3   0.10960 0.15990
## 4   0.14250 0.28390
## 5   0.10030 0.13280
## 6   0.12780 0.17000
## 7   0.09463 0.10900
## 8   0.11890 0.16450
## 9   0.12730 0.19320
## 10  0.11860 0.23960
## 11  0.08206 0.06669
## 12  0.09710 0.12920
## 13  0.09740 0.24580
## 14  0.08401 0.10020
## 15  0.11310 0.22930
## 16  0.11390 0.15950
## 17  0.09867 0.07200
## 18  0.11700 0.20220
## 19  0.09831 0.10270
## 20  0.09779 0.08129
## 21  0.10750 0.12700
## 22  0.10240 0.06492
## 23  0.10730 0.21350
## 24  0.09428 0.10220
## 25  0.11210 0.14570
## 26  0.11860 0.22760
## 27  0.10540 0.18680
## 28  0.09440 0.10660
## 29  0.10820 0.16970
## 30  0.09847 0.11570
## 31  0.10640 0.18870
## 32  0.11090 0.15160
## 33  0.11970 0.14960
## 34  0.09401 0.17190
## 35  0.10400 0.15590
## 36  0.09610 0.13360
## 37  0.09823 0.10980
## 38  0.08983 0.03766
## 39  0.09387 0.05131
## 40  0.10160 0.12550
## 41  0.08162 0.06031
## 42  0.12270 0.12180
## 43  0.09081 0.21900
## 44  0.10410 0.14360
## 45  0.09714 0.10470
## 46  0.10990 0.16860
## 47  0.08600 0.05943
## 48  0.11580 0.12310
## 49  0.10310 0.09092
## 50  0.08752 0.07698
## 51  0.08637 0.04966
## 52  0.07685 0.06059
## 53  0.08261 0.04751
## 54  0.11480 0.14850
## 55  0.09056 0.07081
## 56  0.09524 0.05473
## 57  0.10530 0.12670
## 58  0.11370 0.13650
## 59  0.08060 0.03789
## 60  0.09752 0.05272
## 61  0.11340 0.08061
## 62  0.12430 0.08963
## 63  0.10490 0.20080
## 64  0.07721 0.08751
## 65  0.11220 0.12620
## 66  0.11720 0.14790
## 67  0.10440 0.07773
## 68  0.08139 0.04701
## 69  0.10660 0.14130
## 70  0.09831 0.05234
## 71  0.09009 0.10290
## 72  0.09783 0.15310
## 73  0.10710 0.18300
## 74  0.10070 0.12800
## 75  0.09172 0.06829
## 76  0.09168 0.08424
## 77  0.12910 0.10470
## 78  0.10650 0.21460
## 79  0.12860 0.34540
## 80  0.09934 0.09546
## 81  0.11020 0.09362
## 82  0.10780 0.15350
## 83  0.10630 0.26650
## 84  0.12150 0.17910
## 85  0.09723 0.07165
## 86  0.09874 0.10530
## 87  0.09444 0.09947
## 88  0.09029 0.12060
## 89  0.08772 0.09445
## 90  0.11320 0.13390
## 91  0.08974 0.08606
## 92  0.09200 0.10360
## 93  0.07355 0.05055
## 94  0.10220 0.08165
## 95  0.10390 0.15530
## 96  0.09078 0.13130
## 97  0.10450 0.07057
## 98  0.10240 0.05301
## 99  0.08983 0.07525
## 100 0.09752 0.11410
## 101 0.09488 0.08511
## 102 0.11700 0.07568
## 103 0.08013 0.04038
## 104 0.10050 0.09697
## 105 0.09989 0.08578
## 106 0.13980 0.17650
## 107 0.11420 0.10170
## 108 0.08477 0.06815
## 109 0.13260 0.27680
## 110 0.08759 0.06575
## 111 0.10370 0.08404
## 112 0.09933 0.12090
## 113 0.07837 0.22330
## 114 0.11220 0.13030
## 115 0.11500 0.08201
## 116 0.09768 0.07849
## 117 0.09462 0.12430
## 118 0.11620 0.16490
## 119 0.11550 0.17520
## 120 0.08402 0.06722
## 121 0.09373 0.06685
## 122 0.10540 0.11000
## 123 0.14470 0.28670
## 124 0.11010 0.10990
## 125 0.07115 0.07325
## 126 0.08785 0.06136
## 127 0.09258 0.07862
## 128 0.08217 0.08028
## 129 0.11500 0.18070
## 130 0.10150 0.15890
## 131 0.10660 0.09509
## 132 0.10920 0.12230
## 133 0.10080 0.12840
## 134 0.09462 0.09462
## 135 0.09430 0.09709
## 136 0.09055 0.05761
## 137 0.10510 0.06095
## 138 0.09639 0.06889
## 139 0.11670 0.13050
## 140 0.11640 0.11360
## 141 0.09250 0.04102
## 142 0.09721 0.11370
## 143 0.10920 0.09486
## 144 0.08677 0.09509
## 145 0.07793 0.05139
## 146 0.11520 0.12960
## 147 0.10910 0.17000
## 148 0.08138 0.11670
## 149 0.09970 0.10210
## 150 0.07944 0.06376
## 151 0.11350 0.07589
## 152 0.09405 0.13050
## 153 0.10720 0.15990
## 154 0.09754 0.05113
## 155 0.09384 0.08498
## 156 0.08654 0.06679
## 157 0.11150 0.16650
## 158 0.07445 0.07223
## 159 0.09311 0.05241
## 160 0.07515 0.03718
## 161 0.10890 0.11410
## 162 0.08694 0.11850
## 163 0.11200 0.16660
## 164 0.10120 0.10150
## 165 0.08439 0.11450
## 166 0.08421 0.05352
## 167 0.09594 0.05736
## 168 0.08865 0.09182
## 169 0.10490 0.16030
## 170 0.09855 0.07885
## 171 0.10280 0.06981
## 172 0.09048 0.06288
## 173 0.12570 0.15550
## 174 0.10060 0.05743
## 175 0.08792 0.04302
## 176 0.09138 0.04276
## 177 0.09699 0.12940
## 178 0.09831 0.15560
## 179 0.06251 0.01938
## 180 0.08739 0.03774
## 181 0.10940 0.19140
## 182 0.11410 0.28320
## 183 0.09597 0.08799
## 184 0.09059 0.08155
## 185 0.09057 0.10520
## 186 0.09267 0.04695
## 187 0.08588 0.08468
## 188 0.09774 0.06141
## 189 0.10070 0.05562
## 190 0.08080 0.07253
## 191 0.10750 0.24130
## 192 0.08749 0.06601
## 193 0.06950 0.02344
## 194 0.10340 0.13530
## 195 0.10440 0.19800
## 196 0.07941 0.05366
## 197 0.12000 0.12670
## 198 0.07371 0.08642
## 199 0.08523 0.14280
## 200 0.09872 0.12060
## 201 0.09586 0.08087
## 202 0.08968 0.11980
## 203 0.11410 0.20840
## 204 0.13230 0.17680
## 205 0.09965 0.10580
## 206 0.08876 0.09588
## 207 0.10890 0.07232
## 208 0.08772 0.07304
## 209 0.10020 0.14830
## 210 0.08182 0.06230
## 211 0.09090 0.13480
## 212 0.08871 0.06900
## 213 0.11420 0.15160
## 214 0.10060 0.11460
## 215 0.09463 0.13060
## 216 0.10260 0.15170
## 217 0.09363 0.11540
## 218 0.08054 0.05907
## 219 0.09383 0.13060
## 220 0.08420 0.11300
## 221 0.09646 0.08711
## 222 0.10510 0.11920
## 223 0.10610 0.08502
## 224 0.10250 0.12040
## 225 0.08445 0.04994
## 226 0.09906 0.07624
## 227 0.10530 0.07722
## 228 0.08371 0.10960
## 229 0.07903 0.07529
## 230 0.10880 0.17990
## 231 0.11410 0.15720
## 232 0.06883 0.03813
## 233 0.07780 0.03574
## 234 0.09159 0.10740
## 235 0.08464 0.04087
## 236 0.09070 0.06945
## 237 0.09509 0.16820
## 238 0.08355 0.08348
## 239 0.08223 0.10390
## 240 0.09812 0.12980
## 241 0.09423 0.06630
## 242 0.07926 0.03393
## 243 0.09592 0.13250
## 244 0.08043 0.06807
## 245 0.10270 0.15580
## 246 0.10700 0.05971
## 247 0.07215 0.04524
## 248 0.08760 0.13460
## 249 0.09657 0.07234
## 250 0.10130 0.07808
## 251 0.10070 0.16060
## 252 0.09345 0.05991
## 253 0.10620 0.18490
## 254 0.10080 0.10410
## 255 0.10350 0.11880
## 256 0.10960 0.12790
## 257 0.09260 0.20630
## 258 0.13350 0.22840
## 259 0.11090 0.31140
## 260 0.10630 0.16390
## 261 0.10000 0.10880
## 262 0.08662 0.06290
## 263 0.08999 0.12730
## 264 0.07840 0.05616
## 265 0.09726 0.08995
## 266 0.09469 0.11430
## 267 0.09688 0.11470
## 268 0.07956 0.08259
## 269 0.09425 0.06219
## 270 0.10820 0.12890
## 271 0.06429 0.02675
## 272 0.09834 0.07608
## 273 0.09401 0.19610
## 274 0.09037 0.04689
## 275 0.08855 0.07027
## 276 0.12250 0.07210
## 277 0.09379 0.03872
## 278 0.08923 0.05884
## 279 0.07948 0.04052
## 280 0.09516 0.07688
## 281 0.10200 0.14530
## 282 0.07813 0.04340
## 283 0.10370 0.14420
## 284 0.10660 0.18020
## 285 0.07818 0.09580
## 286 0.08393 0.04216
## 287 0.08605 0.10110
## 288 0.06955 0.03729
## 289 0.08020 0.11810
## 290 0.08713 0.05008
## 291 0.08757 0.16760
## 292 0.08992 0.09823
## 293 0.10050 0.07943
## 294 0.08372 0.05642
## 295 0.09667 0.08393
## 296 0.09198 0.06221
## 297 0.08518 0.04721
## 298 0.09968 0.05914
## 299 0.06576 0.05220
## 300 0.10150 0.06797
## 301 0.11500 0.16420
## 302 0.08451 0.10140
## 303 0.10800 0.18380
## 304 0.10680 0.06678
## 305 0.08853 0.07694
## 306 0.07474 0.05688
## 307 0.08511 0.05251
## 308 0.07005 0.03116
## 309 0.07376 0.03614
## 310 0.08352 0.03735
## 311 0.08814 0.05253
## 312 0.07618 0.03515
## 313 0.08794 0.07948
## 314 0.08597 0.05969
## 315 0.10740 0.05847
## 316 0.08511 0.03834
## 317 0.07734 0.03212
## 318 0.09746 0.11170
## 319 0.09968 0.19720
## 320 0.07557 0.03454
## 321 0.10610 0.11110
## 322 0.08020 0.08564
## 323 0.11340 0.08834
## 324 0.11700 0.18750
## 325 0.08673 0.06545
## 326 0.10280 0.07664
## 327 0.09309 0.05306
## 328 0.07683 0.03892
## 329 0.11690 0.13190
## 330 0.11650 0.12830
## 331 0.09491 0.13710
## 332 0.09579 0.11250
## 333 0.10540 0.06779
## 334 0.08306 0.04458
## 335 0.08313 0.04202
## 336 0.11190 0.10560
## 337 0.09462 0.09965
## 338 0.09116 0.14020
## 339 0.10070 0.07326
## 340 0.10690 0.12830
## 341 0.09751 0.11390
## 342 0.08481 0.09228
## 343 0.10330 0.09097
## 344 0.09797 0.13390
## 345 0.11500 0.07281
## 346 0.09882 0.09159
## 347 0.08386 0.05794
## 348 0.08875 0.07780
## 349 0.09076 0.05886
## 350 0.11580 0.12060
## 351 0.07561 0.03630
## 352 0.12430 0.23640
## 353 0.11490 0.23630
## 354 0.10240 0.09769
## 355 0.07274 0.06064
## 356 0.08760 0.10380
## 357 0.10820 0.13040
## 358 0.08743 0.05492
## 359 0.08293 0.07698
## 360 0.10090 0.05956
## 361 0.07436 0.02650
## 362 0.08582 0.06373
## 363 0.09676 0.07952
## 364 0.09686 0.08468
## 365 0.07937 0.05696
## 366 0.09150 0.11310
## 367 0.09905 0.16690
## 368 0.09231 0.07175
## 369 0.09384 0.08562
## 370 0.10630 0.19540
## 371 0.09742 0.14970
## 372 0.07963 0.06934
## 373 0.10010 0.15150
## 374 0.09446 0.10760
## 375 0.08302 0.06374
## 376 0.09880 0.14380
## 377 0.09073 0.16600
## 378 0.07517 0.04726
## 379 0.08268 0.07548
## 380 0.12160 0.21540
## 381 0.12370 0.11110
## 382 0.07987 0.07079
## 383 0.06935 0.10730
## 384 0.10420 0.12970
## 385 0.08363 0.08575
## 386 0.08682 0.06636
## 387 0.08108 0.07823
## 388 0.07026 0.04831
## 389 0.08365 0.11140
## 390 0.10100 0.13180
## 391 0.09996 0.07542
## 392 0.10390 0.07428
## 393 0.11600 0.15620
## 394 0.11670 0.20870
## 395 0.10290 0.09758
## 396 0.08045 0.05361
## 397 0.10590 0.11470
## 398 0.08044 0.08895
## 399 0.07741 0.04768
## 400 0.09087 0.06232
## 401 0.12300 0.25760
## 402 0.08872 0.05242
## 403 0.07351 0.07899
## 404 0.09879 0.08836
## 405 0.08682 0.04571
## 406 0.10040 0.07460
## 407 0.09495 0.08501
## 408 0.07551 0.08316
## 409 0.10360 0.13040
## 410 0.08685 0.06526
## 411 0.08858 0.05313
## 412 0.10770 0.07804
## 413 0.07969 0.06053
## 414 0.08515 0.10250
## 415 0.08320 0.04605
## 416 0.09773 0.08120
## 417 0.10440 0.06159
## 418 0.11200 0.15710
## 419 0.08785 0.05794
## 420 0.10180 0.05978
## 421 0.08546 0.07722
## 422 0.10310 0.18360
## 423 0.10880 0.11680
## 424 0.09057 0.11470
## 425 0.10750 0.08333
## 426 0.08117 0.03912
## 427 0.09816 0.10130
## 428 0.08801 0.05743
## 429 0.08151 0.03834
## 430 0.07896 0.04522
## 431 0.09947 0.22250
## 432 0.10540 0.13160
## 433 0.11330 0.14890
## 434 0.10180 0.13890
## 435 0.08924 0.07074
## 436 0.10600 0.11330
## 437 0.09136 0.07883
## 438 0.08458 0.05895
## 439 0.08684 0.06330
## 440 0.07966 0.05581
## 441 0.08915 0.11130
## 442 0.08331 0.11090
## 443 0.08817 0.06718
## 444 0.08142 0.04462
## 445 0.08947 0.12320
## 446 0.10300 0.09218
## 447 0.09997 0.13140
## 448 0.09179 0.08890
## 449 0.08388 0.07800
## 450 0.09684 0.11750
## 451 0.06613 0.10640
## 452 0.10320 0.09871
## 453 0.08437 0.06450
## 454 0.10990 0.09242
## 455 0.08583 0.05430
## 456 0.09245 0.07426
## 457 0.09357 0.08574
## 458 0.08791 0.05205
## 459 0.08369 0.05073
## 460 0.07984 0.04626
## 461 0.09898 0.11100
## 462 0.10840 0.19880
## 463 0.06995 0.05223
## 464 0.08508 0.05855
## 465 0.07466 0.05994
## 466 0.08284 0.12230
## 467 0.08675 0.10890
## 468 0.08311 0.05428
## 469 0.09289 0.20040
## 470 0.11750 0.14830
## 471 0.08946 0.06258
## 472 0.08752 0.06000
## 473 0.08098 0.08549
## 474 0.07699 0.03398
## 475 0.10070 0.10690
## 476 0.09040 0.08269
## 477 0.08931 0.11080
## 478 0.06828 0.05319
## 479 0.10460 0.08228
## 480 0.10260 0.18930
## 481 0.09087 0.07838
## 482 0.07991 0.05326
## 483 0.10710 0.11550
## 484 0.09950 0.07957
## 485 0.10430 0.12990
## 486 0.09514 0.15110
## 487 0.08641 0.06698
## 488 0.10890 0.14480
## 489 0.11280 0.09263
## 490 0.07497 0.07112
## 491 0.08192 0.05200
## 492 0.07838 0.06217
## 493 0.10010 0.12890
## 494 0.07372 0.04043
## 495 0.07335 0.05275
## 496 0.09587 0.08345
## 497 0.10760 0.13340
## 498 0.08928 0.07630
## 499 0.10120 0.13170
## 500 0.10850 0.16440
## 501 0.09883 0.13640
## 502 0.11620 0.16810
## 503 0.11580 0.10850
## 504 0.09342 0.12750
## 505 0.16340 0.22390
## 506 0.12550 0.22040
## 507 0.10960 0.11520
## 508 0.11940 0.10710
## 509 0.09427 0.06712
## 510 0.11830 0.18700
## 511 0.08099 0.09661
## 512 0.08472 0.05016
## 513 0.11060 0.14690
## 514 0.09832 0.08918
## 515 0.09215 0.08597
## 516 0.10490 0.08499
## 517 0.10680 0.12480
## 518 0.10370 0.13100
## 519 0.12180 0.16610
## 520 0.11250 0.11170
## 521 0.13710 0.12250
## 522 0.10300 0.21060
## 523 0.08511 0.04413
## 524 0.09916 0.10700
## 525 0.09492 0.08419
## 526 0.10360 0.07632
## 527 0.10750 0.11380
## 528 0.09003 0.06307
## 529 0.12480 0.09755
## 530 0.11000 0.09009
## 531 0.10730 0.09713
## 532 0.10160 0.09453
## 533 0.09277 0.07255
## 534 0.09156 0.13130
## 535 0.09687 0.09752
## 536 0.10460 0.17390
## 537 0.10380 0.11540
## 538 0.12360 0.15520
## 539 0.08098 0.04878
## 540 0.08668 0.11990
## 541 0.09984 0.11200
## 542 0.08837 0.12300
## 543 0.08275 0.07214
## 544 0.08671 0.06877
## 545 0.09578 0.10180
## 546 0.09246 0.06747
## 547 0.09434 0.04994
## 548 0.08877 0.08066
## 549 0.08491 0.05030
## 550 0.08192 0.06602
## 551 0.07431 0.04227
## 552 0.09566 0.08194
## 553 0.08276 0.04234
## 554 0.09240 0.05605
## 555 0.08123 0.05824
## 556 0.09030 0.07658
## 557 0.10030 0.07504
## 558 0.08123 0.04971
## 559 0.08473 0.13300
## 560 0.09261 0.10210
## 561 0.09929 0.11260
## 562 0.07449 0.03558
## 563 0.10480 0.20870
## 564 0.10990 0.22360
## 565 0.11100 0.11590
## 566 0.09780 0.10340
## 567 0.08455 0.10230
## 568 0.11780 0.27700
## 569 0.05263 0.04362
library(MVN)
## Warning: package 'MVN' was built under R version 4.3.3
test = mvn(data1_fix, mvnTest = "mardia", univariateTest = "SW", multivariatePlot = "qq")

test
## $multivariateNormality
##              Test        Statistic              p value Result
## 1 Mardia Skewness 183.764023308911 1.15899340618412e-38     NO
## 2 Mardia Kurtosis 10.3892333316892                    0     NO
## 3             MVN             <NA>                 <NA>     NO
## 
## $univariateNormality
##           Test  Variable Statistic   p value Normality
## 1 Shapiro-Wilk    X1        0.9875   1e-04      NO    
## 2 Shapiro-Wilk    X2        0.9170  <0.001      NO    
## 
## $Descriptives
##      n       Mean    Std.Dev  Median     Min    Max    25th   75th      Skew
## X1 569 0.09636028 0.01406413 0.09587 0.05263 0.1634 0.08637 0.1053 0.4539207
## X2 569 0.10434098 0.05281276 0.09263 0.01938 0.3454 0.06492 0.1304 1.1838556
##     Kurtosis
## X1 0.8244671
## X2 1.6088967

Secara eksploratif, dapat terlihat bahwa terdapat penyimpangan yang cukup besar antara titik-titik data dengan garis. Selain itu, hasil tes Mardia juga menunjukkan bahwa data tidak berdistribusi normal multivariat. Oleh karena itu, akan dilakukan transformasi data.

X1 <- log(data1$smoothness_mean)
X2 <- log(data1$compactness_mean)

data2_fix <- data.frame(cbind(X1,X2))
data2_fix
##            X1        X2
## 1   -2.133687 -1.281574
## 2   -2.468168 -2.542875
## 3   -2.210918 -1.833207
## 4   -1.948413 -1.259133
## 5   -2.299590 -2.018911
## 6   -2.057289 -1.771957
## 7   -2.357781 -2.216407
## 8   -2.129472 -1.804845
## 9   -2.061209 -1.644029
## 10  -2.131999 -1.428784
## 11  -2.500305 -2.707700
## 12  -2.332014 -2.046394
## 13  -2.328929 -1.403237
## 14  -2.476819 -2.300587
## 15  -2.179483 -1.472724
## 16  -2.172434 -1.835711
## 17  -2.315974 -2.631089
## 18  -2.145581 -1.598498
## 19  -2.319630 -2.275943
## 20  -2.324933 -2.509732
## 21  -2.230264 -2.063568
## 22  -2.278869 -2.734600
## 23  -2.232127 -1.544118
## 24  -2.361486 -2.280824
## 25  -2.188364 -1.926206
## 26  -2.131999 -1.480166
## 27  -2.249993 -1.677717
## 28  -2.360214 -2.238672
## 29  -2.223774 -1.773723
## 30  -2.318003 -2.156755
## 31  -2.240550 -1.667597
## 32  -2.199126 -1.886510
## 33  -2.122767 -1.899790
## 34  -2.364354 -1.760842
## 35  -2.263364 -1.858541
## 36  -2.342366 -2.012905
## 37  -2.320444 -2.209095
## 38  -2.409836 -3.279157
## 39  -2.365844 -2.969870
## 40  -2.286712 -2.075450
## 41  -2.505681 -2.808257
## 42  -2.098013 -2.105375
## 43  -2.398986 -1.518684
## 44  -2.262403 -1.940724
## 45  -2.331602 -2.256656
## 46  -2.208184 -1.780226
## 47  -2.453408 -2.822956
## 48  -2.155891 -2.094758
## 49  -2.272056 -2.397775
## 50  -2.435888 -2.564210
## 51  -2.449115 -3.002555
## 52  -2.565900 -2.803625
## 53  -2.493625 -3.046815
## 54  -2.164564 -1.907170
## 55  -2.401743 -2.647755
## 56  -2.351355 -2.905343
## 57  -2.250942 -2.065933
## 58  -2.174192 -1.991431
## 59  -2.518257 -3.273068
## 60  -2.327698 -2.942760
## 61  -2.176834 -2.518133
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## 479 -2.257612 -2.497627
## 480 -2.276917 -1.664422
## 481 -2.398325 -2.546186
## 482 -2.526854 -2.932570
## 483 -2.233992 -2.158485
## 484 -2.307598 -2.531118
## 485 -2.260484 -2.040990
## 486 -2.352406 -1.889813
## 487 -2.448652 -2.703361
## 488 -2.217325 -1.932402
## 489 -2.182139 -2.379142
## 490 -2.590667 -2.643387
## 491 -2.502012 -2.956512
## 492 -2.546186 -2.777883
## 493 -2.301586 -2.048718
## 494 -2.607481 -3.208183
## 495 -2.612513 -2.942192
## 496 -2.344762 -2.483508
## 497 -2.229335 -2.014403
## 498 -2.415978 -2.573082
## 499 -2.290657 -2.027229
## 500 -2.221005 -1.805453
## 501 -2.314354 -1.992164
## 502 -2.152442 -1.783196
## 503 -2.155891 -2.221005
## 504 -2.370650 -2.059639
## 505 -1.811554 -1.496556
## 506 -2.075450 -1.512311
## 507 -2.210918 -2.161086
## 508 -2.125276 -2.233992
## 509 -2.361592 -2.701273
## 510 -2.134532 -1.676647
## 511 -2.513430 -2.337073
## 512 -2.468404 -2.992537
## 513 -2.201835 -1.918003
## 514 -2.319528 -2.417098
## 515 -2.384338 -2.453757
## 516 -2.254748 -2.465222
## 517 -2.236797 -2.081043
## 518 -2.266253 -2.032558
## 519 -2.105375 -1.795165
## 520 -2.184802 -2.191939
## 521 -1.987045 -2.099644
## 522 -2.273026 -1.557795
## 523 -2.463811 -3.120615
## 524 -2.311021 -2.234926
## 525 -2.354721 -2.474679
## 526 -2.267218 -2.572820
## 527 -2.230264 -2.173313
## 528 -2.407612 -2.763510
## 529 -2.081043 -2.327390
## 530 -2.207275 -2.406946
## 531 -2.232127 -2.331705
## 532 -2.286712 -2.358838
## 533 -2.377632 -2.623479
## 534 -2.390761 -2.030270
## 535 -2.334385 -2.327698
## 536 -2.257612 -1.749275
## 537 -2.265289 -2.159351
## 538 -2.090705 -1.863041
## 539 -2.513553 -3.020435
## 540 -2.445532 -2.121097
## 541 -2.304186 -2.189256
## 542 -2.426223 -2.095571
## 543 -2.491931 -2.629147
## 544 -2.445186 -2.676988
## 545 -2.345701 -2.284745
## 546 -2.380979 -2.696072
## 547 -2.360850 -2.996933
## 548 -2.421707 -2.517512
## 549 -2.466163 -2.989750
## 550 -2.502012 -2.717798
## 551 -2.599510 -3.163678
## 552 -2.346955 -2.501768
## 553 -2.491810 -3.162023
## 554 -2.381628 -2.881511
## 555 -2.510471 -2.843183
## 556 -2.404618 -2.569419
## 557 -2.299590 -2.589734
## 558 -2.510471 -3.001549
## 559 -2.468286 -2.017406
## 560 -2.379358 -2.281803
## 561 -2.309710 -2.183914
## 562 -2.597090 -3.335972
## 563 -2.255702 -1.566857
## 564 -2.208184 -1.497897
## 565 -2.198225 -2.155028
## 566 -2.324831 -2.269150
## 567 -2.470412 -2.279846
## 568 -2.138767 -1.283738
## 569 -2.944469 -3.132240
test = mvn(data2_fix, mvnTest = "mardia", univariateTest = "SW", multivariatePlot = "qq")

test
## $multivariateNormality
##              Test        Statistic           p value Result
## 1 Mardia Skewness 5.38450637342627 0.250069526119044    YES
## 2 Mardia Kurtosis 1.47864509793058 0.139235192870837    YES
## 3             MVN             <NA>              <NA>    YES
## 
## $univariateNormality
##           Test  Variable Statistic   p value Normality
## 1 Shapiro-Wilk    X1        0.9971    0.4096    YES   
## 2 Shapiro-Wilk    X2        0.9965    0.2533    YES   
## 
## $Descriptives
##      n      Mean   Std.Dev    Median       Min       Max      25th      75th
## X1 569 -2.350210 0.1455718 -2.344762 -2.944469 -1.811554 -2.449115 -2.250942
## X2 569 -2.380518 0.4944591 -2.379142 -3.943514 -1.063052 -2.734600 -2.037149
##           Skew   Kurtosis
## X1 -0.06745920  0.3644211
## X2 -0.03390649 -0.3788768

Setelah melalui transformasi, dapat terlihat bahwa titik-titik data sudah tidak menyimpang secara jauh lagi dengan garis. Selain itu, hasil tes Mardia juga menunjukkan bahwa data telah berdistribusi normal multivariat. Sehingga, uji asumsi normalitas terpenuhi.

UJI HOMOGENITAS

Uji homogenitas digunakan untuk menguji apakah dua atau lebih kelompok memiliki matriks kovarians yang sama untuk beberapa variabel terikat.

library(biotools)
## Warning: package 'biotools' was built under R version 4.3.3
## Loading required package: MASS
## ---
## biotools version 4.2
Y <- data1$diagnosis
boxM(data = data2_fix, grouping = Y)
## 
##  Box's M-test for Homogeneity of Covariance Matrices
## 
## data:  data2_fix
## Chi-Sq (approx.) = 21.951, df = 3, p-value = 6.679e-05

Berdasarkan hasil uji Box’s M, didapatkan hasil p-value < alpha sehingga H0 ditolak. Oleh karena itu, terdeteksi gejala heteroskedastisitas dalam data dan data perlu ditransformasi.

library(dplyr)
## Warning: package 'dplyr' was built under R version 4.3.3
## 
## Attaching package: 'dplyr'
## The following object is masked from 'package:MASS':
## 
##     select
## The following objects are masked from 'package:stats':
## 
##     filter, lag
## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union
num <- data.frame(diagnosis=c("M","B"))
num <- data1 %>%
  mutate(numerik=recode(diagnosis,
                        "M"=0,
                        "B"=1))

model <- glm(num$numerik~X1+X2, data=data1, family=binomial)
summary(model)
## 
## Call:
## glm(formula = num$numerik ~ X1 + X2, family = binomial, data = data1)
## 
## Coefficients:
##             Estimate Std. Error z value Pr(>|z|)    
## (Intercept)  -5.5194     2.0659  -2.672  0.00755 ** 
## X1            1.5689     1.0431   1.504  0.13257    
## X2           -4.2320     0.4054 -10.440  < 2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## (Dispersion parameter for binomial family taken to be 1)
## 
##     Null deviance: 751.44  on 568  degrees of freedom
## Residual deviance: 500.57  on 566  degrees of freedom
## AIC: 506.57
## 
## Number of Fisher Scoring iterations: 5
predicted_probabilities <- predict(model,type="response")

Y <- cut(predicted_probabilities,
              breaks=c(0,0.627,1.354),
              labels=c("B", "M"),
           right=TRUE)

boxM(data = data2_fix, grouping = as.factor(Y))
## 
##  Box's M-test for Homogeneity of Covariance Matrices
## 
## data:  data2_fix
## Chi-Sq (approx.) = 4.8456, df = 3, p-value = 0.1835

Setelah melalui transformasi, diperoleh p-value yang baru yaitu 0.1835 > alpha sehingga H0 diterima. Oleh karena itu, dapat disimpulkan bahwa gejala heteroskedastisitas telah teratasi dan asumsi homoskedastisitas terpenuhi.

ONE WAY MANOVA

data_manova <- data.frame(X1, X2, Y)
owm <- manova(cbind(X1, X2) ~ Y, data=data_manova)
summary(owm)
##            Df  Pillai approx F num Df den Df    Pr(>F)    
## Y           1 0.67283   581.99      2    566 < 2.2e-16 ***
## Residuals 567                                             
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Berdasarkan hasil analisis varians multivariat tersebut, diperoleh sebuah kesimpulan bahwa terdapat variabel bebas yang memiliki pengaruh signifikan terhadap variabel terikat. Oleh karena itu, perlu dilakukan uji lanjut.

UJI LANJUT

summary.aov(owm)
##  Response X1 :
##              Df Sum Sq Mean Sq F value    Pr(>F)    
## Y             1 2.8456 2.84561  175.55 < 2.2e-16 ***
## Residuals   567 9.1910 0.01621                      
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response X2 :
##              Df Sum Sq Mean Sq F value    Pr(>F)    
## Y             1 91.994  91.994  1112.7 < 2.2e-16 ***
## Residuals   567 46.877   0.083                      
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Berdasarkan hasil uji lanjut Post Hoc Test tersebut, diperoleh kesimpulan bahwa kedua variabel X1 (Rata-rata smoothness) dan variabel X2(Rata-rata compactness) memiliki pengaruh yang signifikan terhadap Y (Diagnosis Kanker payudara).

DATASET TWO WAY

Dataset ini berisi informasi kesehatan yang luas untuk 2.149 pasien, masing-masing diidentifikasi secara unik dengan ID mulai dari 4751 hingga 6900. Dataset ini mencakup rincian demografis, faktor gaya hidup, riwayat kesehatan, pengukuran klinis, penilaian kognitif dan fungsional, gejala, dan diagnosis Penyakit Alzheimer.

data2 <- read.csv("data2.csv")
head(data2)
##   PatientID Age Gender Ethnicity EducationLevel      BMI Smoking
## 1      4751  73      0         0              2 22.92775       0
## 2      4752  89      0         0              0 26.82768       0
## 3      4753  73      0         3              1 17.79588       0
## 4      4754  74      1         0              1 33.80082       1
## 5      4755  89      0         0              0 20.71697       0
## 6      4756  86      1         1              1 30.62689       0
##   AlcoholConsumption PhysicalActivity DietQuality SleepQuality
## 1          13.297218        6.3271125   1.3472143     9.025679
## 2           4.542524        7.6198845   0.5187671     7.151293
## 3          19.555085        7.8449878   1.8263347     9.673574
## 4          12.209266        8.4280014   7.4356041     8.392554
## 5          18.454356        6.3104607   0.7954975     5.597238
## 6           4.140144        0.2110616   1.5849220     7.261953
##   FamilyHistoryAlzheimers CardiovascularDisease Diabetes Depression HeadInjury
## 1                       0                     0        1          1          0
## 2                       0                     0        0          0          0
## 3                       1                     0        0          0          0
## 4                       0                     0        0          0          0
## 5                       0                     0        0          0          0
## 6                       0                     0        1          0          0
##   Hypertension SystolicBP DiastolicBP CholesterolTotal CholesterolLDL
## 1            0        142          72         242.3668       56.15090
## 2            0        115          64         231.1626      193.40800
## 3            0         99         116         284.1819      153.32276
## 4            0        118         115         159.5822       65.36664
## 5            0         94         117         237.6022       92.86970
## 6            0        168          62         280.7125      198.33463
##   CholesterolHDL CholesterolTriglycerides      MMSE FunctionalAssessment
## 1       33.68256                162.18914 21.463532             6.518877
## 2       79.02848                294.63091 20.613267             7.118696
## 3       69.77229                 83.63832  7.356249             5.895077
## 4       68.45749                277.57736 13.991127             8.965106
## 5       56.87430                291.19878 13.517609             6.045039
## 6       79.08050                263.94365 27.517529             5.510144
##   MemoryComplaints BehavioralProblems        ADL Confusion Disorientation
## 1                0                  0 1.72588346         0              0
## 2                0                  0 2.59242413         0              0
## 3                0                  0 7.11954774         0              1
## 4                0                  1 6.48122586         0              0
## 5                0                  0 0.01469122         0              0
## 6                0                  0 9.01568628         1              0
##   PersonalityChanges DifficultyCompletingTasks Forgetfulness Diagnosis
## 1                  0                         1             0         0
## 2                  0                         0             1         0
## 3                  0                         1             0         0
## 4                  0                         0             0         0
## 5                  1                         1             0         0
## 6                  0                         0             0         0
##   DoctorInCharge
## 1      XXXConfid
## 2      XXXConfid
## 3      XXXConfid
## 4      XXXConfid
## 5      XXXConfid
## 6      XXXConfid

UJI NORMALITAS

data1_fix2 <- data.frame(cbind(data2$PhysicalActivity,data2$SleepQuality))
data1_fix2
##               X1       X2
## 1    6.327112474 9.025679
## 2    7.619884540 7.151293
## 3    7.844987791 9.673574
## 4    8.428001350 8.392554
## 5    6.310460689 5.597238
## 6    0.211061631 7.261953
## 7    9.257694910 5.477686
## 8    4.649450668 4.213210
## 9    1.531359788 5.748224
## 10   6.440772687 7.551773
## 11   8.819950351 7.644097
## 12   3.834639382 8.312326
## 13   3.978078872 8.253005
## 14   0.631280727 7.333236
## 15   9.714565829 9.087141
## 16   2.956494729 6.736797
## 17   7.182894555 4.654828
## 18   1.306320412 5.436423
## 19   7.127939893 6.790196
## 20   4.060713917 7.393126
## 21   6.381502407 9.521027
## 22   9.126038218 9.574005
## 23   7.676580404 9.250389
## 24   6.934726371 4.412596
## 25   7.198931183 6.732595
## 26   8.939248659 9.582177
## 27   6.509781497 5.797064
## 28   9.986553927 6.090394
## 29   0.442690864 7.869068
## 30   5.292522976 8.391243
## 31   8.172444166 7.686632
## 32   7.780543611 6.744820
## 33   7.731579822 5.621529
## 34   7.905611793 9.018246
## 35   5.013303852 6.164646
## 36   3.769174562 4.872168
## 37   3.985612824 8.810729
## 38   4.773199920 5.539086
## 39   4.005685760 6.046635
## 40   3.831908858 8.833341
## 41   3.613763603 4.938171
## 42   3.690074973 7.255963
## 43   3.759919282 5.532066
## 44   2.915573105 9.741159
## 45   4.581855185 9.999201
## 46   1.225182426 6.715982
## 47   0.930558096 8.473919
## 48   0.307673697 5.720985
## 49   9.338357919 8.204619
## 50   3.599932511 5.123009
## 51   6.848293354 8.353761
## 52   1.230084068 8.232079
## 53   6.578338283 7.981846
## 54   9.859541546 9.710274
## 55   8.194583994 8.554071
## 56   8.117289817 4.137893
## 57   8.030965822 9.527303
## 58   0.785802296 4.580381
## 59   6.034843146 5.912972
## 60   9.673810277 7.621481
## 61   6.539632391 9.470753
## 62   8.153139134 6.551533
## 63   2.308566553 4.074439
## 64   0.825491352 9.986318
## 65   3.690136810 8.561219
## 66   1.353521832 5.208674
## 67   0.094837670 9.383941
## 68   8.731341357 4.231688
## 69   3.441452426 5.966402
## 70   3.877091637 6.062905
## 71   4.855611503 7.988010
## 72   8.492193835 5.547509
## 73   9.985068848 7.561233
## 74   0.119480851 5.397002
## 75   4.810866399 8.371714
## 76   9.861258410 8.303338
## 77   8.112291312 5.949474
## 78   9.277794334 8.900769
## 79   1.915913436 6.146166
## 80   5.204411588 5.112512
## 81   8.784313445 5.528365
## 82   0.954071963 8.066368
## 83   6.438980427 9.209427
## 84   7.639779986 4.213680
## 85   5.525953087 9.768864
## 86   4.012125565 7.040055
## 87   7.789202728 5.278123
## 88   5.328581148 6.160692
## 89   0.826220365 8.467348
## 90   8.596946094 9.623875
## 91   5.369292726 7.092991
## 92   8.072807244 9.078879
## 93   2.973493710 6.090990
## 94   5.487732366 6.271848
## 95   8.152379678 8.197573
## 96   3.835697960 8.395433
## 97   2.519586929 5.196521
## 98   5.141054570 8.114125
## 99   2.948416556 6.145350
## 100  3.754985346 9.800457
## 101  0.480427759 4.179465
## 102  0.413137686 7.673755
## 103  8.594595563 6.055814
## 104  1.006976654 9.382493
## 105  0.371613269 5.710992
## 106  4.099069626 5.970889
## 107  0.221694561 7.965445
## 108  9.129938879 9.774264
## 109  6.293358538 8.890280
## 110  3.722786069 5.401475
## 111  6.224811709 5.847681
## 112  2.904978948 9.400619
## 113  1.032838031 9.162086
## 114  8.860267774 8.776682
## 115  5.154916287 4.738132
## 116  9.208989544 8.974868
## 117  5.371700899 8.054286
## 118  4.382984750 5.009484
## 119  1.477053154 7.471878
## 120  8.269198501 9.736569
## 121  0.285509630 7.682910
## 122  2.677443039 8.940403
## 123  3.434712218 6.864591
## 124  2.687728983 8.384602
## 125  3.024630635 8.863253
## 126  1.299438892 8.193919
## 127  8.382785448 6.279817
## 128  4.550097986 6.885777
## 129  4.776335486 5.980217
## 130  0.835944539 5.314997
## 131  9.495844194 7.976353
## 132  3.759815129 9.636811
## 133  8.287726559 4.560836
## 134  8.484430438 4.918901
## 135  1.895187761 8.794595
## 136  7.902595613 7.123508
## 137  3.697976576 5.177030
## 138  6.941537038 9.514376
## 139  7.932129774 6.244616
## 140  4.079767747 8.945354
## 141  4.719271867 4.214772
## 142  4.347627047 9.983429
## 143  7.734304948 9.370081
## 144  3.365452018 7.294820
## 145  7.877661114 4.056827
## 146  2.850125099 4.336467
## 147  4.860084547 8.842697
## 148  6.145030222 6.267036
## 149  6.893605137 5.192307
## 150  7.015328513 8.549867
## 151  6.615995912 7.512128
## 152  6.986113659 6.457284
## 153  8.410063363 8.847995
## 154  5.588130079 7.614823
## 155  5.621272926 4.664539
## 156  7.823262493 6.145071
## 157  2.723938104 8.579315
## 158  1.951928614 6.700508
## 159  3.838677524 6.396638
## 160  6.065147916 9.302614
## 161  5.109163018 8.634986
## 162  0.664529148 5.863166
## 163  0.068538626 7.582172
## 164  1.455640024 5.254171
## 165  3.654345179 9.775854
## 166  2.524450734 8.047720
## 167  4.437512568 5.128130
## 168  5.142474585 8.047322
## 169  3.598203487 8.015484
## 170  0.404029098 6.336383
## 171  5.226966648 7.906201
## 172  2.244523115 4.231904
## 173  8.312775801 6.491371
## 174  2.862376937 7.440153
## 175  7.634173993 5.453490
## 176  4.036442044 4.681225
## 177  4.191025868 9.068296
## 178  5.141069382 9.630179
## 179  3.698666792 9.779705
## 180  3.174277087 9.156386
## 181  5.957518976 7.708648
## 182  4.867640414 9.223368
## 183  4.427868031 5.277152
## 184  7.489578800 9.586542
## 185  7.869849736 7.819307
## 186  4.293537665 6.780675
## 187  5.601585140 9.509201
## 188  6.417288761 5.917599
## 189  9.296853839 5.069082
## 190  7.442755354 6.098710
## 191  8.027074916 8.063561
## 192  1.927921477 7.694272
## 193  3.961081178 8.660614
## 194  3.247181265 7.345049
## 195  9.947909587 5.520566
## 196  8.847971683 6.915031
## 197  3.716346849 4.808708
## 198  9.095152050 4.457428
## 199  2.041589327 8.542215
## 200  9.874974891 9.443387
## 201  4.236013001 5.018263
## 202  6.729113936 6.518285
## 203  7.184832376 5.430601
## 204  4.019272802 4.511288
## 205  0.183676594 9.393881
## 206  3.410777046 4.470068
## 207  8.399828228 8.807932
## 208  6.411627158 9.292147
## 209  5.172226479 9.379209
## 210  1.141677173 9.625827
## 211  7.614818072 9.274465
## 212  3.688410293 4.097670
## 213  6.900270615 4.248309
## 214  1.648362186 9.041231
## 215  0.740275029 9.940734
## 216  4.070773396 8.551496
## 217  0.966281971 4.140628
## 218  3.729816632 4.439974
## 219  9.923465322 7.047064
## 220  2.707950018 8.278827
## 221  4.190688672 9.655139
## 222  5.837506161 9.524950
## 223  2.859660320 7.973566
## 224  2.621373480 4.008685
## 225  7.222447762 8.931011
## 226  8.017559021 9.135239
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## 1782 0.338153096 8.002450
## 1783 6.035369721 7.397376
## 1784 3.923449360 6.056168
## 1785 7.894907518 6.713845
## 1786 0.291961296 6.097625
## 1787 9.497015998 4.358842
## 1788 9.724728590 7.715179
## 1789 6.674560328 4.757197
## 1790 0.116297482 5.803819
## 1791 5.699390944 5.792930
## 1792 8.767182928 4.809093
## 1793 1.892319208 9.181705
## 1794 1.683291645 8.015368
## 1795 9.534552669 4.364895
## 1796 1.181638298 4.373065
## 1797 9.444808093 8.287346
## 1798 4.713740624 5.819237
## 1799 4.658689652 7.470355
## 1800 5.724150456 5.691170
## 1801 5.419982205 4.980747
## 1802 0.259786927 8.962067
## 1803 8.558213771 7.750787
## 1804 4.374850709 9.909064
## 1805 6.311665462 9.484200
## 1806 8.733518268 4.683135
## 1807 2.861012075 7.770778
## 1808 4.862593464 6.341881
## 1809 2.041317675 7.964213
## 1810 5.230037954 6.618425
## 1811 9.296835440 5.967754
## 1812 6.020111521 5.578890
## 1813 9.377951788 7.182425
## 1814 7.133286275 5.573678
## 1815 6.023296072 9.405875
## 1816 1.491470721 5.326705
## 1817 6.309278179 9.587869
## 1818 2.272874751 9.328922
## 1819 3.241623949 4.804933
## 1820 0.452172897 4.421872
## 1821 1.711593449 4.519885
## 1822 0.099179905 4.434905
## 1823 0.377784640 7.872985
## 1824 1.644693625 9.931824
## 1825 9.427544831 6.627702
## 1826 1.942706252 7.502559
## 1827 0.392162046 9.932262
## 1828 4.487207943 6.586294
## 1829 0.715538390 5.685390
## 1830 7.787740597 8.762903
## 1831 6.657484516 4.124499
## 1832 0.629103521 7.832514
## 1833 0.263776927 6.419951
## 1834 1.665555335 9.068290
## 1835 0.476853068 6.537934
## 1836 3.492006713 7.551696
## 1837 8.625543881 4.137355
## 1838 9.635507547 9.677301
## 1839 7.496865747 8.742195
## 1840 9.060157503 5.691627
## 1841 8.775824530 4.214155
## 1842 3.520581662 7.317518
## 1843 2.724935537 6.805265
## 1844 0.865505201 4.184963
## 1845 0.758425302 5.368609
## 1846 1.338332528 7.265013
## 1847 6.746166506 6.162877
## 1848 2.160057816 6.761063
## 1849 1.510410312 4.857394
## 1850 3.170947417 4.346708
## 1851 1.019401369 6.623771
## 1852 4.254672299 5.367382
## 1853 6.660147850 4.254873
## 1854 6.806547500 8.951450
## 1855 7.276945916 9.918766
## 1856 2.505818767 5.425820
## 1857 5.646509337 5.919874
## 1858 0.019956906 6.006377
## 1859 3.747015030 5.479615
## 1860 6.512123850 4.109265
## 1861 6.816821098 4.073752
## 1862 8.729187189 5.520776
## 1863 8.708821856 8.338496
## 1864 1.413557484 7.581512
## 1865 3.673632807 6.011095
## 1866 3.755575133 9.398562
## 1867 4.251052665 9.127617
## 1868 7.013510116 4.262445
## 1869 7.335371240 6.383782
## 1870 2.168141581 4.715351
## 1871 3.699745032 4.728651
## 1872 6.753043621 9.132781
## 1873 2.009106401 8.910180
## 1874 8.493581309 7.812838
## 1875 5.334342212 7.615019
## 1876 1.458034951 9.910524
## 1877 9.184181547 8.278086
## 1878 9.858644693 8.689239
## 1879 0.380752525 7.112846
## 1880 2.979994025 8.558910
## 1881 1.752285275 6.997782
## 1882 5.538740304 8.403617
## 1883 6.429221734 5.052315
## 1884 5.399615112 6.291599
## 1885 5.112705277 5.038564
## 1886 7.628189728 9.576361
## 1887 4.141378646 9.460874
## 1888 4.004900056 4.313828
## 1889 4.358274980 8.275862
## 1890 0.135299620 4.152637
## 1891 4.618762136 9.382030
## 1892 7.975633062 9.795459
## 1893 2.386598550 5.585371
## 1894 8.889825595 8.965095
## 1895 0.546067206 4.167289
## 1896 7.302839963 4.337330
## 1897 5.108983593 7.979993
## 1898 0.627307231 6.547717
## 1899 1.561771894 9.022263
## 1900 2.287715799 4.416581
## 1901 8.761610911 4.493132
## 1902 8.841834857 5.351304
## 1903 4.523844504 8.709108
## 1904 7.733203908 7.613761
## 1905 9.188524480 6.342495
## 1906 0.791471674 7.683601
## 1907 7.440545807 9.647424
## 1908 8.139960942 8.636694
## 1909 6.585358779 9.114924
## 1910 0.335384000 9.225077
## 1911 5.131833754 8.908367
## 1912 0.125202683 7.474802
## 1913 5.579025816 5.988642
## 1914 6.451099638 9.417279
## 1915 3.092963977 4.820024
## 1916 2.199039260 9.450911
## 1917 0.912922636 7.859771
## 1918 6.036596687 8.155943
## 1919 5.278284652 6.512568
## 1920 2.539822339 8.114029
## 1921 2.831182590 8.404025
## 1922 7.574256453 6.437041
## 1923 2.649062292 9.873654
## 1924 5.764415317 5.532676
## 1925 4.918256594 8.177995
## 1926 7.284965593 6.981196
## 1927 9.169833031 4.008388
## 1928 2.609147068 9.908633
## 1929 0.205303932 6.462495
## 1930 2.833507280 8.365162
## 1931 4.496116907 5.689445
## 1932 8.754723009 7.080829
## 1933 2.615689770 7.760052
## 1934 7.077613348 9.825681
## 1935 9.925559507 4.743849
## 1936 4.187184062 5.436681
## 1937 7.833811667 5.135683
## 1938 4.144894498 6.779246
## 1939 5.371383973 7.255351
## 1940 4.531173353 8.675551
## 1941 9.302901817 7.156592
## 1942 5.387738889 9.162202
## 1943 8.598759290 7.340570
## 1944 7.009845986 7.127650
## 1945 0.962562004 8.526822
## 1946 5.556923010 8.772479
## 1947 0.314731794 7.683223
## 1948 4.411354457 7.663635
## 1949 9.538424988 8.930221
## 1950 1.541340353 8.319863
## 1951 6.324575046 4.379219
## 1952 9.111274267 7.088391
## 1953 7.529675563 6.632324
## 1954 7.606683884 4.420943
## 1955 0.379227531 5.940909
## 1956 4.035658336 4.979517
## 1957 9.148462476 8.538750
## 1958 5.311993687 5.596701
## 1959 6.420774238 4.955423
## 1960 6.845568462 8.918556
## 1961 8.563196487 9.958887
## 1962 7.957842550 6.554297
## 1963 5.654854675 8.389189
## 1964 9.327890888 6.984167
## 1965 4.258207262 9.582566
## 1966 1.278167997 6.993833
## 1967 8.396567018 7.192876
## 1968 0.291541906 6.362157
## 1969 7.979117719 6.202612
## 1970 2.113722736 4.252143
## 1971 7.310961077 7.847713
## 1972 2.570626476 7.034120
## 1973 2.879838121 7.009335
## 1974 8.363399824 9.146111
## 1975 2.092653352 8.663942
## 1976 7.604209952 6.994537
## 1977 1.683455705 8.128716
## 1978 4.568941172 8.766244
## 1979 1.938666359 9.021964
## 1980 2.176175352 6.489841
## 1981 9.853817133 8.344002
## 1982 0.050560278 8.947572
## 1983 0.331743416 7.113182
## 1984 7.601345060 8.315466
## 1985 8.589238048 8.788732
## 1986 7.680174937 5.323306
## 1987 2.819996480 5.520972
## 1988 7.209136952 5.026449
## 1989 6.979616845 7.681316
## 1990 8.587384148 4.504472
## 1991 1.218963385 7.967169
## 1992 3.583844221 7.161885
## 1993 4.556833538 4.276919
## 1994 2.945723775 6.708658
## 1995 3.107247726 6.932516
## 1996 3.459809889 9.460509
## 1997 9.976581454 4.715534
## 1998 3.438004484 4.260542
## 1999 9.504678301 4.564708
## 2000 9.319172094 6.209636
## 2001 8.305149463 7.862230
## 2002 0.182554696 4.312029
## 2003 3.309847059 6.520243
## 2004 8.767911655 4.527160
## 2005 0.855091948 4.649400
## 2006 8.113952517 9.691701
## 2007 4.608131010 9.712505
## 2008 5.714610279 6.279848
## 2009 9.519231670 8.572455
## 2010 6.130911213 9.749571
## 2011 5.192593567 4.460036
## 2012 7.464692043 5.858770
## 2013 2.576862935 5.798028
## 2014 0.492454430 9.985307
## 2015 8.601466530 5.409637
## 2016 2.373756312 9.160355
## 2017 0.926409610 5.614719
## 2018 9.793562831 6.620672
## 2019 5.657330853 4.323188
## 2020 7.035978807 4.444632
## 2021 7.635473959 9.212180
## 2022 0.022461560 4.544017
## 2023 5.160350902 5.137506
## 2024 0.198637581 7.713025
## 2025 7.741597537 5.336567
## 2026 3.475070744 5.151361
## 2027 1.736418728 9.386881
## 2028 5.418354621 7.115646
## 2029 1.372628033 9.339183
## 2030 8.195905153 6.497990
## 2031 5.584056883 9.214991
## 2032 0.429290543 8.082638
## 2033 5.422803485 9.907700
## 2034 0.710315084 5.629009
## 2035 8.398880413 5.802241
## 2036 9.564388552 4.663711
## 2037 5.099976708 5.743538
## 2038 2.902960253 4.592000
## 2039 6.735203780 9.135464
## 2040 2.617579559 7.164066
## 2041 4.016191285 9.112567
## 2042 4.551224909 7.869491
## 2043 1.659933660 4.645490
## 2044 9.723538361 8.314329
## 2045 9.621395587 7.645894
## 2046 2.005275390 6.370981
## 2047 1.095919251 4.515479
## 2048 7.491242386 5.465014
## 2049 5.140033612 8.819508
## 2050 8.679744241 8.304590
## 2051 8.453190530 5.816467
## 2052 7.465421424 5.364626
## 2053 2.604218197 6.918767
## 2054 0.934962783 7.271949
## 2055 1.768551218 8.050991
## 2056 8.192486044 9.891742
## 2057 8.569750627 9.227229
## 2058 6.487105350 9.789721
## 2059 3.655345857 9.602547
## 2060 6.824674278 9.416989
## 2061 0.593052841 4.153488
## 2062 5.769843844 5.707521
## 2063 7.671327797 9.660031
## 2064 5.669645661 6.679697
## 2065 9.658793963 8.309027
## 2066 4.191477050 4.465378
## 2067 4.544123821 7.062484
## 2068 2.968621221 4.396507
## 2069 8.342139340 9.691204
## 2070 1.731872717 7.529734
## 2071 4.000143699 5.293074
## 2072 5.215282399 8.350396
## 2073 0.482209622 8.094816
## 2074 2.750262774 9.117293
## 2075 3.610386830 6.519889
## 2076 6.295095870 7.922732
## 2077 8.559800172 6.408287
## 2078 4.872265837 6.309326
## 2079 9.369925916 8.798458
## 2080 2.919120665 7.797271
## 2081 9.079687994 7.994295
## 2082 5.703772421 5.027829
## 2083 3.611448691 6.478630
## 2084 5.350638886 9.314261
## 2085 0.498293697 9.277611
## 2086 1.272869576 5.441953
## 2087 9.799702089 7.117649
## 2088 2.584292658 7.897737
## 2089 5.483513139 4.144769
## 2090 5.088933948 7.538554
## 2091 3.144428767 7.783483
## 2092 8.823072463 5.323151
## 2093 9.596895047 7.287440
## 2094 4.733324253 4.496817
## 2095 3.490207196 5.303670
## 2096 7.973018470 7.606749
## 2097 9.464028736 7.296669
## 2098 8.167681553 6.516408
## 2099 9.468334215 7.972071
## 2100 1.109198186 5.797903
## 2101 1.098442027 6.015094
## 2102 4.315767808 8.153123
## 2103 7.044546105 4.180376
## 2104 4.120716307 7.275428
## 2105 7.693043820 9.576382
## 2106 4.593094081 9.866460
## 2107 5.105483724 9.448988
## 2108 4.127906231 7.903963
## 2109 4.043529570 9.999840
## 2110 0.532764611 8.870584
## 2111 8.448133523 4.717674
## 2112 0.958544834 6.759129
## 2113 4.069969216 8.772615
## 2114 5.701564408 4.300610
## 2115 1.658027426 4.565574
## 2116 8.728048828 4.136609
## 2117 2.302765650 4.249376
## 2118 3.850204375 5.203225
## 2119 3.519901645 5.920784
## 2120 4.152669915 8.486049
## 2121 8.702362670 6.653608
## 2122 2.800971731 4.510746
## 2123 0.263901870 5.202338
## 2124 2.590443386 6.977782
## 2125 1.271396048 9.295084
## 2126 4.548318239 8.197806
## 2127 2.604904714 9.506577
## 2128 6.523343707 6.069556
## 2129 3.297674091 7.117036
## 2130 5.289252661 8.336232
## 2131 0.334605261 7.858227
## 2132 0.565121612 9.516258
## 2133 5.235067976 6.681213
## 2134 3.788125456 9.989399
## 2135 3.168538657 5.011026
## 2136 3.430526726 8.412729
## 2137 8.150726658 4.573938
## 2138 2.938590253 6.972506
## 2139 6.830831748 8.642361
## 2140 8.394825679 5.736780
## 2141 0.947567127 4.917760
## 2142 8.181468969 7.088091
## 2143 7.389633240 6.271699
## 2144 4.352401934 9.624312
## 2145 4.049963547 7.535540
## 2146 1.360667029 8.555256
## 2147 9.886002294 5.769464
## 2148 6.354281753 8.322874
## 2149 6.570993383 9.878711
test = mvn(data1_fix2, mvnTest = "mardia", univariateTest = "SW", multivariatePlot = "qq")

test
## $multivariateNormality
##              Test         Statistic          p value Result
## 1 Mardia Skewness  3.11366075747284 0.53898797364374    YES
## 2 Mardia Kurtosis -14.0034612145734                0     NO
## 3             MVN              <NA>             <NA>     NO
## 
## $univariateNormality
##           Test  Variable Statistic   p value Normality
## 1 Shapiro-Wilk    X1        0.9567  <0.001      NO    
## 2 Shapiro-Wilk    X2        0.9512  <0.001      NO    
## 
## $Descriptives
##       n     Mean  Std.Dev   Median         Min      Max     25th     75th
## X1 2149 4.920202 2.857191 4.766424 0.003616017 9.987429 2.570626 7.427899
## X2 2149 7.051081 1.763573 7.115646 4.002628660 9.999840 5.482997 8.562521
##           Skew  Kurtosis
## X1  0.04490983 -1.180940
## X2 -0.06953308 -1.214088

Secara eksploratif, dapat terlihat bahwa terdapat penyimpangan yang cukup besar antara titik-titik data dengan garis. Selain itu, hasil tes Mardia juga menunjukkan bahwa data tidak berdistribusi normal multivariat. Oleh karena itu, akan dilakukan pemotongan data.

data2_p <- data1_fix2[50:100,]
data2_p
##             X1       X2
## 50  3.59993251 5.123009
## 51  6.84829335 8.353761
## 52  1.23008407 8.232079
## 53  6.57833828 7.981846
## 54  9.85954155 9.710274
## 55  8.19458399 8.554071
## 56  8.11728982 4.137893
## 57  8.03096582 9.527303
## 58  0.78580230 4.580381
## 59  6.03484315 5.912972
## 60  9.67381028 7.621481
## 61  6.53963239 9.470753
## 62  8.15313913 6.551533
## 63  2.30856655 4.074439
## 64  0.82549135 9.986318
## 65  3.69013681 8.561219
## 66  1.35352183 5.208674
## 67  0.09483767 9.383941
## 68  8.73134136 4.231688
## 69  3.44145243 5.966402
## 70  3.87709164 6.062905
## 71  4.85561150 7.988010
## 72  8.49219384 5.547509
## 73  9.98506885 7.561233
## 74  0.11948085 5.397002
## 75  4.81086640 8.371714
## 76  9.86125841 8.303338
## 77  8.11229131 5.949474
## 78  9.27779433 8.900769
## 79  1.91591344 6.146166
## 80  5.20441159 5.112512
## 81  8.78431345 5.528365
## 82  0.95407196 8.066368
## 83  6.43898043 9.209427
## 84  7.63977999 4.213680
## 85  5.52595309 9.768864
## 86  4.01212557 7.040055
## 87  7.78920273 5.278123
## 88  5.32858115 6.160692
## 89  0.82622037 8.467348
## 90  8.59694609 9.623875
## 91  5.36929273 7.092991
## 92  8.07280724 9.078879
## 93  2.97349371 6.090990
## 94  5.48773237 6.271848
## 95  8.15237968 8.197573
## 96  3.83569796 8.395433
## 97  2.51958693 5.196521
## 98  5.14105457 8.114125
## 99  2.94841656 6.145350
## 100 3.75498535 9.800457
x1_p <- data2_p[1]
x2_p <- data2_p[2]

data2_fix1 <- data.frame(cbind(x1_p,x2_p))
data2_fix1
##             X1       X2
## 50  3.59993251 5.123009
## 51  6.84829335 8.353761
## 52  1.23008407 8.232079
## 53  6.57833828 7.981846
## 54  9.85954155 9.710274
## 55  8.19458399 8.554071
## 56  8.11728982 4.137893
## 57  8.03096582 9.527303
## 58  0.78580230 4.580381
## 59  6.03484315 5.912972
## 60  9.67381028 7.621481
## 61  6.53963239 9.470753
## 62  8.15313913 6.551533
## 63  2.30856655 4.074439
## 64  0.82549135 9.986318
## 65  3.69013681 8.561219
## 66  1.35352183 5.208674
## 67  0.09483767 9.383941
## 68  8.73134136 4.231688
## 69  3.44145243 5.966402
## 70  3.87709164 6.062905
## 71  4.85561150 7.988010
## 72  8.49219384 5.547509
## 73  9.98506885 7.561233
## 74  0.11948085 5.397002
## 75  4.81086640 8.371714
## 76  9.86125841 8.303338
## 77  8.11229131 5.949474
## 78  9.27779433 8.900769
## 79  1.91591344 6.146166
## 80  5.20441159 5.112512
## 81  8.78431345 5.528365
## 82  0.95407196 8.066368
## 83  6.43898043 9.209427
## 84  7.63977999 4.213680
## 85  5.52595309 9.768864
## 86  4.01212557 7.040055
## 87  7.78920273 5.278123
## 88  5.32858115 6.160692
## 89  0.82622037 8.467348
## 90  8.59694609 9.623875
## 91  5.36929273 7.092991
## 92  8.07280724 9.078879
## 93  2.97349371 6.090990
## 94  5.48773237 6.271848
## 95  8.15237968 8.197573
## 96  3.83569796 8.395433
## 97  2.51958693 5.196521
## 98  5.14105457 8.114125
## 99  2.94841656 6.145350
## 100 3.75498535 9.800457
test = mvn(data2_fix1, mvnTest = "mardia", univariateTest = "SW", multivariatePlot = "qq")

test
## $multivariateNormality
##              Test         Statistic            p value Result
## 1 Mardia Skewness 0.528210860172236  0.970697175560602    YES
## 2 Mardia Kurtosis -1.87213603575184 0.0611877856398249    YES
## 3             MVN              <NA>               <NA>    YES
## 
## $univariateNormality
##           Test  Variable Statistic   p value Normality
## 1 Shapiro-Wilk    X1         0.945    0.0196    NO    
## 2 Shapiro-Wilk    X2         0.937    0.0094    NO    
## 
## $Descriptives
##     n     Mean  Std.Dev   Median        Min      Max     25th     75th
## X1 51 5.387357 2.966364 5.369293 0.09483767 9.985069 3.207473 8.114791
## X2 51 7.181405 1.786959 7.561233 4.07443855 9.986318 5.730241 8.510710
##          Skew  Kurtosis
## X1 -0.1747597 -1.233343
## X2 -0.1103892 -1.328211

Setelah melakukan pemotongan data, dapat terlihat bahwa titik-titik data sudah tidak menyimpang secara jauh lagi dengan garis. Selain itu, hasil tes Mardia juga menunjukkan bahwa data telah berdistribusi normal multivariat. Sehingga, uji asumsi normalitas terpenuhi.

UJI HOMOGENITAS

# Forgetfulness 
Y1 <- data2[50:100,33]
boxM(data = data2_fix1, grouping = Y1)
## 
##  Box's M-test for Homogeneity of Covariance Matrices
## 
## data:  data2_fix1
## Chi-Sq (approx.) = 1.2139, df = 3, p-value = 0.7497
# Diagnose
Y2 <- data2[50:100,34]
boxM(data = data2_p, grouping = Y2)
## 
##  Box's M-test for Homogeneity of Covariance Matrices
## 
## data:  data2_p
## Chi-Sq (approx.) = 1.3217, df = 3, p-value = 0.724

Berdasarkan hasil perhitungan Box’s M, diperoleh kesimpulan bahwa kedua variabel Y1 dan Y2 memiliki gejala homogenitas sehingga asumsi terpenuhi.

TWO WAY MANOVA

fact_Y1 <- as.factor(data2$Forgetfulness[50:100])
fact_Y2 <- as.factor(data2$Diagnosis[50:100])
data2_p <- data.frame(x1_p = unlist(x1_p), x2_p = unlist(x2_p))
manova <- manova(cbind(x1_p, x2_p) ~ fact_Y1 * fact_Y2, data = data2_p)
summary(manova)
##                 Df   Pillai approx F num Df den Df Pr(>F)
## fact_Y1          1 0.073648  1.82857      2     46 0.1721
## fact_Y2          1 0.051298  1.24364      2     46 0.2978
## fact_Y1:fact_Y2  1 0.024778  0.58436      2     46 0.5615
## Residuals       47

Berdasarkan hasil analisis varians multivariat di atas, diketahui bahwa tidak ada variabel bebas yang berpengaruh signifikan terhadap variabel terikat sehingga tidak perlu dilakukan uji lanjut.