The following (hypothetical) data set gives the number of hours 10 sixth-graders read per week and their performance on a standardized verbal test (maximum of 100).

a) Construct a scatterplot for these data. Estimate or compute the correlation coefficient. Based on this correlation coefficient, would you conclude that reading time and test scores are correlated? Explain.
b) Suppose you learn that five of the children read only comic books while the other five read regular books. Make a guess as to which data points fall in which group. How could you confirm your guess about the groups?
c) Assuming that your guess in part b is correct, how does it change your view of the correlation between reading time and test scores? Explain.

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Reading time per week Verbal test score 50 65 56 62 60 75 50 10 12 38