The number of degrees of freedom for the denominator in one-way ANOVA test involving 4 population means with 15 observations sampled from each population is:
A) 60
B) 19
C) 56
D) 45
E) 34

Question

Quizplus · Accepted Answer

The denominator degrees of freedom in a one-way ANOVA test is calculated as the total number of observations minus the number of groups. With 4 populations and 15 observations each, we have a total of 4*15 = 60 observations. Subtracting the number of groups (4) gives us 60 - 4 = 56 degrees of freedom for the denominator.

The Number of Degrees of Freedom for the Denominator in One-Way