John has three different conditions in his experiment, with five subjects in each condition. What is the total number df associated with John's study?
A) 2
B) 12
C) 14
D) 15

Question

Quizplus · Accepted Answer

To calculate the total number of degrees of freedom (df), we need to know the number of subjects and the number of conditions. John has three different conditions with five subjects in each, meaning there are 15 subjects in total. 
The formula to calculate the df for a between-subjects design is (number of conditions - 1) x (number of subjects - 1). 
Using this formula: (3-1) x (15-1) = 28. 
Therefore, the total number of df associated with John's study is 28.

John Has Three Different Conditions in His Experiment, with Five