lab 3.1 revised

Head and Tail of Dataset

  Class Alcohol Malic acid  Ash Alcalinity of ash Magnesium Total phenols
1     1   14.23       1.71 2.43              15.6       127          2.80
2     1   13.20       1.78 2.14              11.2       100          2.65
3     1   13.16       2.36 2.67              18.6       101          2.80
4     1   14.37       1.95 2.50              16.8       113          3.85
5     1   13.24       2.59 2.87              21.0       118          2.80
6     1   14.20       1.76 2.45              15.2       112          3.27
  Flavanoids Nonflavanoid phenols Proanthocyanins Color intensity  Hue
1       3.06                 0.28            2.29            5.64 1.04
2       2.76                 0.26            1.28            4.38 1.05
3       3.24                 0.30            2.81            5.68 1.03
4       3.49                 0.24            2.18            7.80 0.86
5       2.69                 0.39            1.82            4.32 1.04
6       3.39                 0.34            1.97            6.75 1.05
  OD280/OD315 of diluted wines Proline
1                         3.92    1065
2                         3.40    1050
3                         3.17    1185
4                         3.45    1480
5                         2.93     735
6                         2.85    1450
    Class Alcohol Malic acid  Ash Alcalinity of ash Magnesium Total phenols
173     3   14.16       2.51 2.48              20.0        91          1.68
174     3   13.71       5.65 2.45              20.5        95          1.68
175     3   13.40       3.91 2.48              23.0       102          1.80
176     3   13.27       4.28 2.26              20.0       120          1.59
177     3   13.17       2.59 2.37              20.0       120          1.65
178     3   14.13       4.10 2.74              24.5        96          2.05
    Flavanoids Nonflavanoid phenols Proanthocyanins Color intensity  Hue
173       0.70                 0.44            1.24             9.7 0.62
174       0.61                 0.52            1.06             7.7 0.64
175       0.75                 0.43            1.41             7.3 0.70
176       0.69                 0.43            1.35            10.2 0.59
177       0.68                 0.53            1.46             9.3 0.60
178       0.76                 0.56            1.35             9.2 0.61
    OD280/OD315 of diluted wines Proline
173                         1.71     660
174                         1.74     740
175                         1.56     750
176                         1.56     835
177                         1.62     840
178                         1.60     560

Summary Statistics

                             vars   n  mean    sd median trimmed   mad   min
Class                           1 178  1.94  0.78   2.00    1.92  1.48  1.00
Alcohol                         2 178 13.00  0.81  13.05   13.01  1.01 11.03
Malic acid                      3 178  2.34  1.12   1.87    2.21  0.77  0.74
Ash                             4 178  2.37  0.27   2.36    2.37  0.24  1.36
Alcalinity of ash               5 178 19.49  3.34  19.50   19.42  3.04 10.60
Magnesium                       6 178 99.74 14.28  98.00   98.44 14.83 70.00
Total phenols                   7 178  2.30  0.63   2.36    2.29  0.75  0.98
Flavanoids                      8 178  2.03  1.00   2.13    2.02  1.24  0.34
Nonflavanoid phenols            9 178  0.36  0.12   0.34    0.36  0.13  0.13
Proanthocyanins                10 178  1.59  0.57   1.56    1.56  0.56  0.41
Color intensity                11 178  5.06  2.32   4.69    4.83  2.24  1.28
Hue                            12 178  0.96  0.23   0.96    0.96  0.24  0.48
OD280/OD315 of diluted wines   13 178  2.61  0.71   2.78    2.63  0.77  1.27
Proline*                       14 178 59.47 32.40  56.50   59.12 37.81  1.00
                                max  range  skew kurtosis   se
Class                          3.00   2.00  0.11    -1.34 0.06
Alcohol                       14.83   3.80 -0.05    -0.89 0.06
Malic acid                     5.80   5.06  1.02     0.22 0.08
Ash                            3.23   1.87 -0.17     1.03 0.02
Alcalinity of ash             30.00  19.40  0.21     0.40 0.25
Magnesium                    162.00  92.00  1.08     1.96 1.07
Total phenols                  3.88   2.90  0.09    -0.87 0.05
Flavanoids                     5.08   4.74  0.02    -0.91 0.07
Nonflavanoid phenols           0.66   0.53  0.44    -0.68 0.01
Proanthocyanins                3.58   3.17  0.51     0.47 0.04
Color intensity               13.00  11.72  0.85     0.30 0.17
Hue                            1.71   1.23  0.02    -0.40 0.02
OD280/OD315 of diluted wines   4.00   2.73 -0.30    -1.11 0.05
Proline*                     121.00 120.00  0.12    -1.05 2.43

Original Plot

Interpretation

As alcohol increases, so does proline. Wines in Class 1 tend to have higher amounts of proline and alcohol, while wines in Class 2 have lower amounts. Class 3 is generally in between the other two.

Revised Plot

Revisions

I accidentally made Proline into a factor, instead of Class, which completely changed my scatter plot. I reworded my title and added the word “source” to the source line for more clarity. I also fogot to save the original plot as an image, so I added code to do that.