Week 11/12

Question 1

What is an advantage of repeated measures

Answer 1

As participants take part in every condition, we can attribute some variance in performance to individual differences

Question 2

What does this variance due to individual differences do to the variance of the ANOVA error term

Answer 2

It removes variance from the ANOVA error term

Question 3

Is repeated measures or between groups more powerful

Answer 3

Repeated measures

Question 4

How do you calculate the number of interactions

Answer 4

2(to the power of k) - k - 1 = number of interactions

Question 5

When is normality and sphericity etc assumed and violated

Answer 5

If it is under 0.05 it is violated as there is a significant difference

If it is over 0.05 then it is assumed

Question 6

What is Levenes test used for

Answer 6

They test the error level across groups

Question 7

What is Mauchly’s test for

Answer 7

It tests the error level across different times

Question 8

What is boxes test for

Answer 8

It tests the error level across both groups and time

Question 9

How many time points needed for Mauchly’s Test of Sphericity and what type of design is it used for

Answer 9

Minimum of 3 time points and it is always within subjects

Question 10

When is a homogeneity of variance test used

Answer 10

If it has more than one group