Question: For the student survey data set described in Exercise 1.11, the sample correlation between y = political ideology (scored 1 to 7, with higher values
For the student survey data set described in Exercise 1.11, the sample correlation between y = political ideology
(scored 1 to 7, with higher values representing more conservatism) and x = number of times a week reading a newspaper is r = −0.066.
(a) Would you conclude that the sample association is strong, or weak?
(b) Interpret the square of the correlation.
(c) When y is predicted using x = religiosity (how often attend religious services, scored 0, 1, 2, 3), the sample correlation is r = 0.580.Which of these two explanatory variables seems to have a stronger linear relationship with y?
Explain.
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