Deck 10: One-Way Within-Groups Anova

Question 1

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

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

Answer 1

C

Question 2

What unique assumption is required in repeated-measures ANOVA?

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

Answer 2

D

Question 3

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

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

Answer 3

A

Question 4

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

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

Question 5

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?

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

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?

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

Question 7

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

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 8

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

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

Question 9

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?

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

Question 10

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

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 11

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

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

Question 12

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

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 13

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

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