Question 1

What unique assumption is required in repeated-measures ANOVA?

Accepted Answer

A)  Continuous-level measurement 
B)  Homoscedasticity 
C)  Independence 
D)  Sphericity D

Question 2

Which of the following would result in the FEWEST potential Type I errors in a repeated-measures ANOVA?

Accepted Answer

A)  Application of the Greenhouse-Geisser adjustment 
B)  Application of the Huynh-Feldt adjustment 
C)  Application of the Kruskal-Wallis adjustment 
D)  Using no adjustment technique A

Question 3

Which statistical procedure can we use to obtain an intraclass correlation coefficient?

Accepted Answer

A)  A repeated-measures ANOVA 
B)  A Pearson product- moment correlation 
C)  A between-groups ANOVA 
D)  A fixed design A

Question 4

What assumption is NOT required in a repeated-measures ANOVA?

Accepted Answer

A)  Continuous-level measurement 
B)  Homoscedasticity 
C)  Independence 
D)  Normality

Question 5

When is sphericity a concern with the within-groups model?

Accepted Answer

A)  When sample size is large 
B)  When the repeated factor has more than two levels 
C)  When using a dependent t-test 
D)  None of the above is correct.

Question 6

If the SS total, SS columns, SS rows, and SS error in a one-way repeated-measures ANOVA are 100, 50, 15, and 35, respectively, what is the explained sum of squares?

Accepted Answer

A)  50 
B)  65 
C)  85 
D)  100

Question 7

For which terms in the ANOVA model are sphericity adjustments potentially important?

Accepted Answer

A)  Between-groups factors 
B)  Within-groups factors 
C)  Neither A nor B 
D)  Both A and B

Question 8

An F ratio with 1 and 20 degrees of freedom is equivalent to which of the following?

Accepted Answer

A)  A (t-ratio)2 with df = 20 
B)  A t-ratio with df = 20 
C)  A PPM with infinite df 
D)  A PPM with 20 df

Question 9

Which two issues can we resolve by using an intraclass correlation technique rather than an interclass correlation technique?

Accepted Answer

A)  Small-n problems and mean differences 
B)  More than two trials and small-n problems 
C)  Differing variances and more than two trials 
D)  Mean differences and more than two trials

Question 10

In a one-way repeated-measures ANOVA, a researcher measured 15 subjects under six different conditions. What number of degrees of freedom is correct for the F-ratio for testing the conditions effect?

Accepted Answer

A)  6, 90 
B)  5, 90 
C)  6, 70 
D)  5, 70

Question 11

A tennis teacher administers six trials of a wall volley test. What is the proper coefficient to use to estimate the reliability of this test?

Accepted Answer

A)  Interclass correlation 
B)  Pearson product-moment correlation 
C)  Spearman-Brown formula 
D)  Kuder-Richardson coefficient 
E)  Intraclass correlation

Question 12

Which statistic is used to adjust the degrees of freedom when sphericity is violated?

Accepted Answer

A)  Alpha 
B)  Beta 
C)  Epsilon 
D)  Gamma

Question 13

What is reported when a repeated-measures ANOVA is used to estimate an intraclass reliability?

Accepted Answer

A)  Pearson product-moment correlation coefficient 
B)  Interclass reliability 
C)  Intraclass reliability 
D)  Sphericity

Exam 10: One-Way Within-Groups Anova