Question 1

The results of a new physical therapy treatment for improving rehabilitation post knee surgery resulted in an effect size of .07. This demonstrates which type of effect size?

Accepted Answer

A)   Small
B)   Medium
C)   Large
D)   Inconclusive B

Question 2

If a significant F ratio is revealed in a Repeated Measures ANOVA, which test should be used to determine what differences have occurred between the participants' measurements?

Accepted Answer

A)   Correlation
B)   Chi Square
C)   Post hoc
D)   p value C

Question 3

MANOVA is a variant of the Student's t-Test that allows for the study of multiple dependent variables.

Accepted Answer

A) True 
 B)False  False

Question 4

When comparing groups in a study, which question is not essential for clinicians to answer?

Accepted Answer

A)   Was there a difference between the groups?
B)   If something different did occur between the groups, was it due to chance?
C)   Did the participants receive a monetary reward for participation?
D)   If something nonrandomized occurred between the groups, how large was the effect size?

Question 5

When using Hotelling's T2 , the effect size is determined by calculating Cohen's d statistic.

Accepted Answer

A) True 
 B)False

Question 6

Which test statistic is an extension of t-Test that involves more than two groups?

Accepted Answer

A)   One-way ANOVA
B)   Cohen's d
C)   Eta squared
D)   Hotelling's T2

Question 7

The F value in a MANOVA is ______________.

Accepted Answer

A)   Multivariate F
B)   P value
C)   Beta value
D)   None of these

Question 8

Hotelling's T squared can be used when only one variable is compared between two groups.

Accepted Answer

A) True 
 B)False

Question 9

One way to assess the magnitude of the difference between groups is to calculate an affect size.

Accepted Answer

A) True 
 B)False

Question 10

Will an affect size be calculated when the group's mean are equivalent under the null hypothesis?

Accepted Answer

A) True 
 B)False

Question 11

Which factor can increase the complexity of interpreting the statistical analysis?

Accepted Answer

A)   Groups are categorized using one independent variable.
B)   The study design uses both independent and repeated measures.
C)   Multiple dependent variables are measured
D)   All of these
E)   None of these

Question 12

With a Repeated Measures ANOVA, which statistic is used to check for sphericity and protect against a type I error?

Accepted Answer

A)   One-way ANOVA
B)   Cohen's d
C)   Eta squared
D)   Mauchly's

Question 13

Which of the following procedures partitions the variability into three distinct parts on the ANOVA table?

Accepted Answer

A)   One-way ANOVA
B)   Factorial ANOVA
C)   Repeated measures ANOVA
D)   None of these

Question 14

What is examined if there is a significant interaction found using factorial ANOVA?

Accepted Answer

A)   Separate effects
B)   Simple main effects
C)   No effects
D)   All effects

Question 15

In which of the following is statistical significance more likely to be found?

Accepted Answer

A)   When using a one-tailed test
B)   When the differences in two means are small
C)   When sample sizes are small
D)   When variances are large

Question 16

When using a t-test, what is the suggested minimum number of individuals per group?

Accepted Answer

A)   5
B)   15
C)   30
D)   50

Question 17

Which of the following is an observed test statistic?

Accepted Answer

A)   F ratio
B)   P value
C)   Beta value
D)   Mean

Question 18

Statistical significance and clinical significance can be used interchangeably when discussing research.

Accepted Answer

A) True 
 B)False

Question 19

The paired t-test is considered more powerful than the independent samples t-test because there is less variability created.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following tests should be used to compare two independent groups using one categorical independent variable and one continuous dependent variable.

Accepted Answer

A)   Paired t-Test
B)   Independent samples t-Test
C)   One-way ANOVA
D)   Chi square

Exam 12: Exploring Statistics Comparing Differences in Health Care

The results of a new physical therapy treatment for improving rehabilitation post knee surgery resulted in an effect size of .07. This demonstrates which type of effect size?

If a significant F ratio is revealed in a Repeated Measures ANOVA, which test should be used to determine what differences have occurred between the participants' measurements?

MANOVA is a variant of the Student's t-Test that allows for the study of multiple dependent variables.

When comparing groups in a study, which question is not essential for clinicians to answer?

When using Hotelling's T², the effect size is determined by calculating Cohen's d statistic.

Which test statistic is an extension of t-Test that involves more than two groups?

The F value in a MANOVA is ______________.

Hotelling's T squared can be used when only one variable is compared between two groups.

One way to assess the magnitude of the difference between groups is to calculate an affect size.

Will an affect size be calculated when the group's mean are equivalent under the null hypothesis?

Which factor can increase the complexity of interpreting the statistical analysis?

With a Repeated Measures ANOVA, which statistic is used to check for sphericity and protect against a type I error?

Which of the following procedures partitions the variability into three distinct parts on the ANOVA table?

What is examined if there is a significant interaction found using factorial ANOVA?

In which of the following is statistical significance more likely to be found?

When using a t-test, what is the suggested minimum number of individuals per group?

Which of the following is an observed test statistic?

Statistical significance and clinical significance can be used interchangeably when discussing research.

The paired t-test is considered more powerful than the independent samples t-test because there is less variability created.

Which of the following tests should be used to compare two independent groups using one categorical independent variable and one continuous dependent variable.