Data on the amount of time spent studying and the exam score of 150 students at a high school were collected.You want to know if a student's exam score is linearly related to the amount of time spent on studying.Which of the following would you compute?
A)Arithmetic mean.
B)Median.
C)Coefficient of variation.
D)Coefficient of correlation

Question

Quizplus · Accepted Answer

To determine if a student's exam score is linearly related to the amount of time spent on studying, we need to calculate the coefficient of correlation between the two variables. The coefficient of correlation, also known as Pearson's correlation coefficient, measures the strength of the linear relationship between two variables. Therefore, the best choice would be D. The arithmetic mean and median would provide information about the central tendency of the data, but not their relationship. The coefficient of variation measures the relative variability of the data, but does not provide information about their relationship.

Data on the Amount of Time Spent Studying and the Exam