chp 13

If you perform multiple t-tests, which of the following is true? a. The risk of Type I error increases. b. The risk of Type I error decreases. c. The risk of Type I error is not impacted. d. There is a 10% chance of committing a Type I error.

a. The risk of Type I error increases.

The variability within groups is due to _______. a. chance b. the grouping factor c. the F ratio d. the level of the dependent variable

a. chance

If you wanted to examine whether the degree of parental involvement differs based on students' grade in school (i.e., first, second, third, etc.), what is the independent variable of interest? a. grade level b. students c. parents d. degree of parent involvement

a. grade level

If your MSwithin is lower than your MSbetween, your F value will be _______. a. higher b. lower c. the same d. one

a. higher

ANOVA first tests for an overall difference between the means. This is known as what type of test? a. omnibus b. pluribus c. omnivorous d. omnibor

a. omnibus

The ANOVA is a(n) _______. a. omnibus test b. correlational test c. regressional analysis d. factorial correlation

a. omnibus test

What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels? a. one way b. two way c. three way d. four way

a. one way

A simple analysis of variance is used to study participants who are tested _______. a. only once b. only twice c. once or more d. twice or more

a. only once

A simple analysis of variance includes _______ factor(s) or treatment variables in the analysis. a. only one b. only two c. three or more d. one or more

a. only one

An omnibus test tests _______. a. overall differences b. specific comparisons c. very large samples d. very small populations

a. overall differences

In order to increase the value of the F statistic, which of the following must occur? a. MSwithin > MSbetween b. MSwithin = MSbetween c. MSwithin < MSbetween d. Ratio = 1

c. MSwithin < MSbetween

When computing the degrees of freedom for ANOVA, how is the within-group estimate calculated? a. n − 1 b. k − 1 c. N − k d. (n - 1) ÷ k

c. N − k

Who is responsible for the invention of the F statistic? a. Pearson Fisher b. Karl Pearson c. R. A. Fisher d. R. A. Pearson

c. R. A. Fisher

What is the first step in the computation of the F statistic? a. setting the level of risk b. selecting the appropriate test c. computing the obtained value d. stating the null and research hypotheses

d. stating the null and research hypotheses

A research study is investigating the effects of studying Chinese 1 or 2 hours weekly between eleventh graders and twelfth graders. How would this factorial design be best described? a. 2 × 2 b. 3 × 2 c. 2 × 3 d. 3 × 3

a. 2 × 2

In a 4 × 3 factorial design, there are how many levels of the second grouping factor? a. 3 b. 4 c. 7 d. 12

a. 3

When interpreting F(2, 27) = 8.80, p < .05, what is the total sample size examined? a. 30 b. 29 c. 3 d. 2

a. 30

When interpreting F(2, 57) = 10.80, p < .01, what is the total sample size examined? a. 60 b. 57 c. 3 d. 2

a. 60

Which of the following is the same as t2 when examining the difference between two groups? a. F b. T c. Cohen's d d. F2

a. F

Which of the following is the formula for computing the F statistic? a. F = MSbetween ÷ MSwithin b. F = SSbetween ÷ SSwithin c. F = MSwithin ÷ MSbetween d. F = SSwithin ÷ SSbetween

a. F = MSbetween ÷ MSwithin

If you wanted to examine whether the television viewing differs based on students' grade in school (i.e., first, second, third, etc.), what is the independent variable of interest? a. grade level b. students c. academic performance d. television viewing

a. grade level

A factorial ANOVA includes _______ treatment factor(s). a. more than one b. only one c. only two d. only three or more

a. more than one

The ANOVA is like an extension of the _______. a. t-test b. F-test c. Correlation d. Regression

a. t-test

When computing the degrees of freedom for ANOVA, how is the between-group estimate calculated? a. n − 1 b. k − 1 c. N − k d. (n - 1) ÷ k

b. k − 1

If your MSbetween is lower than your MSwithin, your F value will be _______. a. higher b. lower c. the same d. zero

b. lower

The ANOVA can be used to test the differences _______. a. between two groups only b. more than two groups c. within a single group d. among three groups only

b. more than two groups

In a 4 × 3 factorial ANOVA design, how many possible group assignments for subjects are there? a. 3 b. 4 c. 7 d. 12

d. 12

When interpreting F(2, 27) = 8.80, p < .05, what is the between-groups df? a. 30 b. 27 c. 3 d. 2

d. 2

Which of the following would be an example of a design that examines the effects of region of residence (e.g., Northeast, South, Midwest, and West) and income (i.e., low, medium, and high)? a. Simple ANOVA b. One-way ANOVA c. 3 × 3 ANOVA d. 4 × 3 ANOVA

d. 4 × 3 ANOVA

The ANOVA uses the _______. a. F-test b. t-test c. p-test d. r-test

a. F-test

Using ANOVA, a null hypothesis could look like this: a. H0: µ1 = µ2 = µ3 b. H0: µ1 > µ2 > µ3 c. H0: µ1 = µ2 > µ3 d.H_1:X ̅_1≠X ̅_2≠X ̅_3

a. H0: µ1 = µ2 = µ3

If your MSbetween is higher than your MSwithin, your F value will be _______. a. higher b. lower c. the same d. zero

a. higher

What is the next step after stating the null and research hypotheses in the computation of the F statistic? a. setting the level of risk b. selecting the appropriate test c. computing the obtained value d. stating research hypotheses

a. setting the level of risk

In ANOVA, the variance due to differences in performance is separated into variance that is due to differences between individuals _______ groups and variance due to differences _______ groups. a. within; between b. above; between c. above; within d. over; between

a. within; between

If the amount of variability due to within-group differences is equal to the amount of variability due to between-group differences, your F value will be equal to _______. a. 0 b. 1 c. −1 d. 2

b. 1

In a 5 × 4 factorial ANOVA design, how many possible group assignments for subjects are there? a. 5 b. 20 c. 4 d. 9

b. 20

When interpreting F(2, 27) = 8.80, p < .05, what is the within-groups df? a. 30 b. 27 c. 3 d. 2

b. 27

A research study is investigating the effects of studying French 1, 2, or 3 hours weekly between fourth graders and ninth graders. How would this factorial design be best described? a. 2 × 3 b. 3 × 2 c. 3 × 3 d. 6 × 3

b. 3 × 2

In a 4 × 3 factorial design, there are how many levels of the first grouping factor? a. 3 b. 4 c. 7 d. 12

b. 4

When interpreting F(2, 57) = 10.80, p < .01, what is the within-groups df? a. 60 b. 57 c. 3 d. 2

b. 57

A researcher wants to create an intervention to improve the well-being of first-semester graduate students, so she gives one group of students specific doses of rocky road ice cream, the next group of students specific doses of licorice, and the third group of students specific doses of chewy fruit-flavored candies for their treatments. To analyze the differences in well-being between the types of "treatment," she would use a(n) _______. a. dependent-samples t-test b. analysis of variance c. independent-samples t-test d. repeated-measures analysis of variance

b. analysis of variance

If your MSwithin is higher than your MSbetween, your F value will be _______. a. higher b. lower c. the same d. one

b. lower

What is the next step after choosing the level of significance in the computation of the F statistic? a. setting the level of risk b. selecting the appropriate test c. computing the obtained value d. stating research hypotheses

b. selecting the appropriate test

The variability between groups is due to _______. a. chance b. the grouping factor c. the F ratio d. the level of the dependent variable

b. the grouping factor

Which of the following would be an example of a design that examines the effects of gender and socioeconomic status (i.e., high, medium, and low) on a test of student achievement? a. simple ANOVA b. one-way ANOVA c. 2 × 3 ANOVA d. 3 × 3 ANOVA

c. 2 × 3 ANOVA

When interpreting F(2, 27) = 8.80, p < .05, how many groups were examined? a. 30 b. 27 c. 3 d. 2

c. 3

When interpreting F(2, 57) = 10.80, p < .01, how many groups were examined? a. 60 b. 57 c. 3 d. 2

c. 3

What is the next step after choosing a specific test in the computation of the F statistic? a. setting the level of risk b. selecting the appropriate test c. computing the obtained value d. stating research hypotheses

c. computing the obtained value

Talking about the direction of specific differences in ANOVA would not make any sense because it is a(n) _______ test. a. monobus b. multibus c. omnibus d. octobus

c. omnibus

When interpreting F(2, 57) = 10.80, p < .01, what is the between-groups df? a. 60 b. 27 c. 3 d. 2

d. 2

Which of the following would be an example of a design that examines the effects of gender and region of residence (e.g., Northeast, South, Midwest, and West)? a. simple ANOVA b. one-way ANOVA c. 2 × 2 ANOVA d. 2 × 4 ANOVA

d. 2 × 4 ANOVA

When your research question calls for you to examine the differences in group means among three or more groups, which of the following would be the appropriate procedure? a. Pearson correlation b. dependent-sample t-test c. regression d. analysis of variance

d. analysis of variance

If you wanted to examine whether the degree of parental involvement differs based on students' grade in school (i.e., first, second, third, etc.), what is the dependent variable of interest? a. grade level b. students c. parents d. degree of parent involvement

d. degree of parent involvement

If you wanted to examine whether the television viewing differs based on students' grade in school (i.e., first, second, third, etc.), what is the dependent variable of interest? a. grade level b. students c. academic performance d. television viewing

d. television viewing

A simple analysis of variance is also called _______. a. the two-way analysis of variance b. factorial ANOVA c. correlational ANOVA d. the one-way analysis of variance

d. the one-way analysis of variance

. Using ANOVA, an alternative or research hypothesis could look like this: a. H0: µ1 = µ2 = µ3 b. H0: µ1 > µ2 > µ3 c. H0: µ1 = µ2 > µ3 d.H_1:X ̅_1≠X ̅_2≠X ̅_3

d.H_1:X ̅_1≠X ̅_2≠X ̅_3