Question 1

In a t-test, the degrees of freedom are a function of the

Accepted Answer

A)  variance.
B)  difference between the means.
C)  sample size.
D)  alpha-level.E) B) and C)
F) A) and B)

Question 2

If a significant main effect involves an independent variable with two conditions, the main effect is interpreted by

Accepted Answer

A)  testing the simple main effects.
B)  inspecting the means.
C)  testing the interaction.
D)  doing follow-up or post hoc tests.E) A) and B)
F) B) and C)

Question 3

Explain the rationale behind the t-test.

Accepted Answer

The t-test is a statistical method used ...

Question 4

The analysis of a factorial design with two independent variables will test

Accepted Answer

A)  one main effect and an interaction.
B)  two main effects and an interaction.
C)  two main effects and two interactions.
D)  None of these answers are correct.E) A) and D)
F) C) and D)

Question 5

The calculated value of F is based on the ratio of between-groups variance to ________ variance.

Accepted Answer

A)  error
B)  systematic
C)  total
D)  reliableE) None of the above
F) A) and C)

Question 6

When ANOVA is used to analyze data from experiments with one independent variable, the total sum of squares is composed of two parts. What are they?

Accepted Answer

When ANOVA (Analysis of Variance) is use...

Question 7

One-tailed is to two-tailed as

Accepted Answer

A)  alpha is to beta.
B)  directional is to nondirectional.
C)  posttest only is to pretest-posttest.
D)  Type II is to Type I.E) None of the above
F) B) and C)

Question 8

What statistic would you use to test whether the means of a two-group experiment were significantly different?

Accepted Answer

A)  ANOVA
B)  T-test
C)  F-test
D)  Regression analysisE) A) and D)
F) A) and C)

Question 9

What is an interaction?

Accepted Answer

An interaction is a kind of action that ...

Question 10

Why do researchers not use t-tests to analyze the data from experimental designs that have more than two conditions?

Accepted Answer

Researchers typically do not use t-tests...

Question 11

Why do researchers not conduct several t-tests to analyze experiments that have more than two conditions?

Accepted Answer

A)  The means will be invalid.
B)  The sample size is too small.
C)  Type I error is inflated.
D)  The power of the analysis is low.E) A) and D)
F) A) and C)

Question 12

If the calculated value of F is .89 and the critical value of F is 4.36, what is likelihood that the researcher will make a Type I error?

Accepted Answer

A)  .00
B)  .05
C)  .89
D)  1.00E) C) and D)
F) A) and D)

Question 13

MANOVA analyzes a composite variable that is the sum of the weighted dependent variables. This composite variable is the

Accepted Answer

A)  discriminant function.
B)  canonical correlation.
C)  factor loading.
D)  canonical variable.E) A) and B)
F) A) and C)

Question 14

What do you do to interpret a significant main effect the involves an independent variable that has more than two conditions?

Accepted Answer

A)  Test the simple main effects.
B)  Simply visually inspect the means.
C)  Test the interaction.
D)  Conduct post hoc tests.E) A) and B)
F) B) and D)

Question 15

What happens to the overall likelihood of making a Type I error as the number of dependent variables increases?

Accepted Answer

A)  Type I error increases
B)  Type I error decreases
C)  Type I error exceeds Type II error
D)  Type II error exceeds Type I errorE) A) and B)
F) A) and C)

Question 16

When the calculated value of F is less than the critical value of F, what decision does the researcher make regarding the null hypothesis?

Accepted Answer

When the calculated value of F (from an ...

Question 17

When would you use a paired t-test?

Accepted Answer

A paired t-test, also known as a depende...

Question 18

When ANOVA is used to analyze data from experiments with two independent variables, the total sum of squares is composed of four parts. What are they?

Accepted Answer

When ANOVA (Analysis of Variance) is use...

Question 19

Distinguish between a one-tailed and a two-tailed statistical test.

Accepted Answer

A one-tailed and a two-tailed statistica...

Exam 12: Statistical Analysis

Explain the rationale behind the t-test.

Correct Answer
Answered by ExamLex AI
The t-test is a statistical method used ...
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What happens to the overall likelihood of making a Type I error as the number of dependent variables increases?

Correct Answer
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Distinguish between a one-tailed and a two-tailed statistical test.

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A one-tailed and a two-tailed statistica...
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The calculated value of F is based on the ratio of between-groups variance to ________ variance.

Correct Answer
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When ANOVA is used to analyze data from experiments with two independent variables, the total sum of squares is composed of four parts. What are they?

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Answered by ExamLex AI
When ANOVA (Analysis of Variance) is use...
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When the calculated value of F is less than the critical value of F, what decision does the researcher make regarding the null hypothesis?

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Answered by ExamLex AI
When the calculated value of F (from an ...
View Answer

What is an interaction?

Correct Answer
Answered by ExamLex AI
An interaction is a kind of action that ...
View Answer

If the calculated value of F is .89 and the critical value of F is 4.36, what is likelihood that the researcher will make a Type I error?

Correct Answer
verified

MANOVA analyzes a composite variable that is the sum of the weighted dependent variables. This composite variable is the

Correct Answer
verified

In a t-test, the degrees of freedom are a function of the

Correct Answer
verified

If a significant main effect involves an independent variable with two conditions, the main effect is interpreted by

Correct Answer
verified

The analysis of a factorial design with two independent variables will test

Correct Answer
verified

Why do researchers not conduct several t-tests to analyze experiments that have more than two conditions?

Correct Answer
verified

What statistic would you use to test whether the means of a two-group experiment were significantly different?

Correct Answer
verified

When ANOVA is used to analyze data from experiments with one independent variable, the total sum of squares is composed of two parts. What are they?

Correct Answer
Answered by ExamLex AI
When ANOVA (Analysis of Variance) is use...
View Answer

What do you do to interpret a significant main effect the involves an independent variable that has more than two conditions?

Correct Answer
verified

One-tailed is to two-tailed as

Correct Answer
verified

Why do researchers not use t-tests to analyze the data from experimental designs that have more than two conditions?

Correct Answer
Answered by ExamLex AI
Researchers typically do not use t-tests...
View Answer

When would you use a paired t-test?

Correct Answer
Answered by ExamLex AI
A paired t-test, also known as a depende...
View Answer

Exam 12: Statistical Analysis

Explain the rationale behind the t-test.

Correct AnswerAnswered by ExamLex AIThe t-test is a statistical method used ...View AnswerShow Answer

What happens to the overall likelihood of making a Type I error as the number of dependent variables increases?

Correct AnswerverifiedShow Answer

Distinguish between a one-tailed and a two-tailed statistical test.

Correct AnswerAnswered by ExamLex AIA one-tailed and a two-tailed statistica...View AnswerShow Answer

The calculated value of F is based on the ratio of between-groups variance to ________ variance.

Correct AnswerverifiedShow Answer

When ANOVA is used to analyze data from experiments with two independent variables, the total sum of squares is composed of four parts. What are they?

Correct AnswerAnswered by ExamLex AIWhen ANOVA (Analysis of Variance) is use...View AnswerShow Answer

When the calculated value of F is less than the critical value of F, what decision does the researcher make regarding the null hypothesis?

Correct AnswerAnswered by ExamLex AIWhen the calculated value of F (from an ...View AnswerShow Answer

What is an interaction?

Correct AnswerAnswered by ExamLex AIAn interaction is a kind of action that ...View AnswerShow Answer

If the calculated value of F is .89 and the critical value of F is 4.36, what is likelihood that the researcher will make a Type I error?

Correct AnswerverifiedShow Answer

MANOVA analyzes a composite variable that is the sum of the weighted dependent variables. This composite variable is the

Correct AnswerverifiedShow Answer

In a t-test, the degrees of freedom are a function of the

Correct AnswerverifiedShow Answer

If a significant main effect involves an independent variable with two conditions, the main effect is interpreted by

Correct AnswerverifiedShow Answer

The analysis of a factorial design with two independent variables will test

Correct AnswerverifiedShow Answer

Why do researchers not conduct several t-tests to analyze experiments that have more than two conditions?

Correct AnswerverifiedShow Answer

What statistic would you use to test whether the means of a two-group experiment were significantly different?

Correct AnswerverifiedShow Answer

When ANOVA is used to analyze data from experiments with one independent variable, the total sum of squares is composed of two parts. What are they?

Correct AnswerAnswered by ExamLex AIWhen ANOVA (Analysis of Variance) is use...View AnswerShow Answer

What do you do to interpret a significant main effect the involves an independent variable that has more than two conditions?

Correct AnswerverifiedShow Answer

One-tailed is to two-tailed as

Correct AnswerverifiedShow Answer

Why do researchers not use t-tests to analyze the data from experimental designs that have more than two conditions?

Correct AnswerAnswered by ExamLex AIResearchers typically do not use t-tests...View AnswerShow Answer

When would you use a paired t-test?

Correct AnswerAnswered by ExamLex AIA paired t-test, also known as a depende...View AnswerShow Answer

Correct Answer
Answered by ExamLex AI
The t-test is a statistical method used ...
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Correct Answer
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Correct Answer
Answered by ExamLex AI
A one-tailed and a two-tailed statistica...
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Correct Answer
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Correct Answer
Answered by ExamLex AI
When ANOVA (Analysis of Variance) is use...
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Correct Answer
Answered by ExamLex AI
When the calculated value of F (from an ...
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Correct Answer
Answered by ExamLex AI
An interaction is a kind of action that ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
When ANOVA (Analysis of Variance) is use...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Researchers typically do not use t-tests...
View Answer

Correct Answer
Answered by ExamLex AI
A paired t-test, also known as a depende...
View Answer