Author Question: In an ABA design, the null hypothesis states that _____. a. there is no difference between the ... (Read 90 times)

ishan · **on:** Jun 19, 2018

In an ABA design, the null hypothesis states that _____.

a. there is no difference between the mean performance during A and B
b. there is an increase in performance from A to B and then a decrease from B back to A
c. performance during B is lower than performance during A
d. there is no difference between the groups that get A and the groups that get B

Question 2

In a one factor repeated measures ANOVA, the mean square is calculated for the _____ variance.

a. between subjects and total
b. between subjects and within subjects
c. within subjects treatment and within subjects error
d. all of these

JCABRERA33 · **Reply #1 on:** Jun 19, 2018

Answer to Question 1

A
The ABA design is a repeated measures design. The null hypothesis states that there will be no differences in performance among any of the treatment groups.

Answer to Question 2

C
There is no need to calculate the mean square for either the between subjects variance or the total variance because they are not required for the calculation of F.