In a school,a scientist observed children during lunch time over several months to study how much they eat and for how many minutes.He evaluated in calories what each child ate each day for lunch.After careful observations,he found that the variables time and calories relate linearly,and that the correlation between those variables is 0.629.Suppose he was to record time in hours rather than in minutes.Would the correlation change?
A)No: correlation does not change with change of units.
B)Yes: correlation changes with change of units.
C)No: correlation changes with change of units.
D)No: the relation is linear.
E)Yes: the two variables do not have the same units.

Question

Quizplus · Accepted Answer

Correlation does not depend on the units of measurement, as it is a measure of the strength and direction of the linear relationship between two variables. Therefore, if the scientist were to record time in hours instead of minutes, the correlation between time and calories would remain the same.

In a School,a Scientist Observed Children During Lunch Time Over