To find out how uniformly babies grow we measured the

Question

To find out how uniformly babies grow, we measured the weights of random eight babies first at 11 months and then at 27 months. We obtained the following data.

Weight at 11 months            Weight at 27 months

14                                          25

14                                          28

20                                          26

17                                          24

15                                          22

17                                          27

15                                          23

16                                          25

Evaluate the correlation coefficient and describe the correlation.