5· +-14 points PriviteraStats2 15.E019. My NotesAsk Your Teacher A researcher me

Question

5· +-14 points PriviteraStats2 15.E019. My NotesAsk Your Teacher 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. Sleep Medication Use 10 6 9 4 Time Spent Working 15 40 17 32 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of drug use times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) Part (c) Divide each measurement in half for time spent working and recalculate the correlation coefficient. (Round your answer to three decimal places.)

Explanation / Answer

The statistical software output for this problem is:

Correlation between Sleep Medication Use and Time Spent Working is:
-0.83530009

Hence,

a) -0.835

Now correlation coefficient does not depend on change of scale for one or both of the variables. Hence,

b) r = -0.835

c) r = -0.835

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