Mean of differences = 2 Standard dev. of differences = 1.4491 Variance of difference = 2.1 1 Describe the shape of the distribution of differences. 2 Describe the relationship between the mean of differences and the means of high school and middle school students (1 and 2). 3 Describe the relationship between the variance of differences and the variances of high school students' ages and middle school students' ages ( and ). 1 2 2 2 Statway College Module 5 by Carnegie Math Pathways is licensed under CC BY NC 4.0 5.3 | 3