Following are the data on study time and score for
Following are the data on study time and score for calculus students from Exercises 4.55 and 4.93.
a. Obtain the linear correlation coefficient.
b. Interpret the value of r in terms of the linear relationship between the two variables in question.
c. Discuss the graphical interpretation of the value of r and verify that it is consistent with the graph you obtained in the corresponding exercise in Section 4.2.
d. Square r and compare the result with the value of the coefficient of determination you obtained in the corresponding exercise in Section 4.3.
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