May 2015
Intermediate to advanced
560 pages
11h 17m
English
Chapter 7 Comparing Paired Groups
Are students’ grades on an achievement test higher after they complete a special course on how to take tests? Do employees who follow a regular exercise program for a year have lower resting pulse rates than they had when they started the program?
These questions involve comparing paired groups of data. The variable that classifies the data into two groups should be nominal. The response variable can be ordinal or continuous, but must be numeric. This chapter discusses the following topics: