For the following data, calculate the r and the r2.Is the strength of the relationship between the two variables, weak, moderate, or strong and what is the proportion of the variation in the y variable that is explained by the x variable?
Case X Y
1 49 81
2 50 88
3 50 90
4 60 95
5 53 87
6 55 99
7 55 89
8 60 91
r = .61; r2 = .372; strength of the relationship is moderate;37.% of the variation in y can be explained by x.
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