Find all pair-wise correlations between variables. Which variable has the strongest correlation with mean arterial blood pressure, i.e., the response? Which variable has the weakest correlation with the response? For which variables do we have evidence that the population correlation coefficient is significantly different from 0?

Y = mmHg

X1 = Age in years

X2 = Weight in kilograms

X3 = BSA

X4 = Duration

X5 = Basal pulse rate in bpm

X6 = Stress - measure of stress

Y X1 X2 X3 X4 X5 X6

1 105 47 85.4 1.75 5.1 63 33

2 115 49 94.2 2.1 3.8 70 14

3 116 49 95.3 1.98 8.2 72 10

4 117 50 94.7 2.01 5.8 73 99

5 112 51 89.4 1.89 7 72 95

6 121 48 99.5 2.25 9.3 71 10

7 121 49 99.8 2.25 2.5 69 42

8 110 47 90.9 1.9 6.2 66 8

9 110 49 89.2 1.83 7.1 69 62

10 114 48 92.7 2.07 5.6 64 35

11 114 47 94.4 2.07 5.3 74 90

12 115 49 94.1 1.98 5.6 71 21

13 114 50 91.6 2.05 10.2 68 47

14 106 45 87.1 1.92 5.6 67 80

15 125 52 101.3 2.19 10 76 98

16 114 46 94.5 1.98 7.4 69 95

17 106 46 87 1.87 3.6 62 18

18 113 46 94.5 1.9 4.3 70 12

19 110 48 90.5 1.88 9 71 99

20 122 56 95.7 2.09 7 75 99