Question

A researcher explores the relationship between alcohol consumption and GPA. They gather data from 12 college juniors, recording weekly drink amounts and current GPA. Calculate Pearson's r to establish a relationship. What step comes after data collection?

A. Step One: Calculation of Covariance
B. Step Two: Pearson's Correlation
C. Step Three: Computation of Means
D. Step Four: Regression Analysis

Answer 1

After data collection, the next step in establishing the relationship between alcohol consumption and GPA is Step Three: Computation of Means. Once you have the means, you can calculate the covariance and the variances of the two variables, and then use those values to calculate Pearson's r.

Step-by-step explanation:

After data collection, the next step in establishing the relationship between alcohol consumption and GPA is Step Three: Computation of Means. In this step, you calculate the means of the weekly drink amounts and current GPA. This will provide you with the average values for each variable, which can then be used in the calculation of Pearson's r, which is Step Two: Pearson's Correlation. Once you have the means, you can calculate the covariance and the variances of the two variables, and then use those values to calculate Pearson's r.