Question: A researcher hypothesizes that there will be a correlation between number of hours per week spent watching TV and grade point average. Eight students are measured on both variables, yielding the following data:

TV GPA

1 3.8

2 4.0

3 2.7

3 3.9

6 3.0

12 2.4

20 1.3

32 3.2

1. Compute the Pearson correlation coefficient.
2. What proportion of variance in GPA is explained by TV (coefficient of determinism)?

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