A study was done that collected data on 100 individuals' grade point averages and the number of hours per week they spent working. A linear regression was done on this data and the corresponding correlation coefficient was 0.3. What does this tell you about the relationship between grade point averages and working?
A) Increasing working does not affect grade point average.
B) Increasing working increases grade point average.
C) Increasing working decreases grade point average.

Question

Quizplus · Accepted Answer

The correlation coefficient of 0.3 indicates a weak positive relationship between the number of hours worked and grade point averages, but it does not imply causation or a significant effect.

A Study Was Done That Collected Data on 100 Individuals