A researcher measures the relationship between sleep medication use (times used

Question

A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided. Compute the Pearson correlation coefficient. () Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. () Divide each measurement in half for time spent working and recalculate the correlation coefficient. () True or false: Multiplying or dividing a positive constant to one set of scores (X or Y) does not change the correlation coefficient. True False

Explanation / Answer

The statistical output for this problem is:

Correlation between x and y is:
-0.90761888

a) Pearson correlation coefficient = -0.908

Correlation doesn't get affected with the multiplication or division of positive constant. Hence,

b) Pearson correlation coefficient = -0.908

c) Pearson correlation coefficient = -0.908

d) The answer is TRUE.

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