Measure the height of your classmates. Ask them the height of their benchmate. Calculate the correlation coefficient of these two variables. Interpret the result.
Height of Classmate X |
Height of Benchmate Y |
67 |
65 |
56 |
66 |
65 |
57 |
68 |
67 |
72 |
68 |
72 |
69 |
69 |
70 |
71 |
72 |
X |
Y |
XY |
X2 |
Y2 |
67 |
65 |
4355 |
4489 |
4225 |
56 |
66 |
3696 |
3136 |
4356 |
65 |
57 |
3705 |
4225 |
3249 |
68 |
67 |
4556 |
4624 |
4489 |
72 |
68 |
4896 |
5184 |
4624 |
72 |
69 |
4968 |
5184 |
4761 |
69 |
70 |
4830 |
4761 |
4900 |
71 |
72 |
5112 |
5041 |
5184 |