5.
+ -/4 points
PriviteraStats3 15.E.019.
My Not
A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided.
Number of
Interruptions
Time Spent "On Task"
9
16
W
37
7
17
2
31
Part (a)
Compute the Pearson correlation coefficient. (Round your answer to three decimal places.)
Part (b)
Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.)
Part (c)
Divide each measurement in half for time spent "on task" and recalculate the correlation coefficient. (Round your answer to three decimal places.)
Part (d)
True or false: Multiplying or dividing a positive constant by one set of scores (X or Y) does not change the correlation coefficient. Note: Use your answers in (a) to (c) to answer true or false.
True
False