Question 1

Suppose MStreat is calculated for three samples that are from a population with a mean = 10. Under which condition below would MStreat certainly become larger?

Accepted Answer

A)   the addition of a sample from a population with the a mean of 10
B)   the addition of a sample from a population with a mean = 20
C)   the removal of one of the three samples from the calculations
D)   all of the other alternatives are correct.E) B) and D)
F) B) and C)

Question 2

A group of 50 participants was divided equally into 5 groups. A Tukey HSD produced a value that led to the conclusion that Mean 1 was significantly larger than Mean 2, p < .05. Which of the following situations would lead to such a conclusion?

Accepted Answer

A)    Xˉ1=13,Xˉ2=5,MSerror =36\bar { X } _ { 1 } = 13 , \bar { X } _ { 2 } = 5 , M S _ { 	ext {error } } = 36Xˉ1​=13,Xˉ2​=5,MSerror ​=36 
B)    Xˉ1=54,Xˉ2=36,MSerror =240\bar { X } _ { 1 } = 54 , \bar { X } _ { 2 } = 36 , M S _ { 	ext {error } } = 240Xˉ1​=54,Xˉ2​=36,MSerror ​=240 
C)    Xˉ1=5Xˉ2=2,MSerror =40\bar { X } _ { 1 } = 5 \bar { X } _ { 2 } = 2 , M S _ { 	ext {error } } = 40Xˉ1​=5Xˉ2​=2,MSerror ​=40 
D)   none of the other alternatives are correct. E) All of the above
F) A) and D)

Question 3

For a one-way ANOVA, an effect size index (f)  that qualifies as small is

Accepted Answer

A)   less than 0
B)   0.10
C)   1.00
D)   all of the descriptive alternatives are correct.E) B) and C)
F) A) and B)

Question 4

If an ANOVA led to the statement, "p < .05"you can be sure that the data produced an F ratio that is greater than

Accepted Answer

A)   1.00
B)   the tabled value for F at the .05 level
C)   both of the descriptive alternatives are correct
D)   neither of the descriptive alternatives is correct.E) All of the above
F) A) and D)

Question 5

The amount of difference that exists among the populations with unknown means (which you have sampled from)  is the issue of

Accepted Answer

A)   hypothesis testing or confidence intervals
B)   assumptions of ANOVA
C)   .05 or .01  α\alphaα  level
D)   effect size. E) C) and D)
F) B) and D)

Question 6

In order to determine the effect of school size on subsequent academic performance, 20 graduating seniors who had gone on to college were chosen from each of four high schools that had graduating classes of 50, 250, 500, and 2000. Mean college grade points were calculated for each high school,  α\alphaα  was set at .05, and an ANOVA was run, producing an F = 2.75. From this you can conclude that

Accepted Answer

A)   H0 should be rejected
B)   H0 should be retained
C)   more information is needed in order to decide about the null hypothesis, namely . D) All of the above
E) B) and C)

Question 7

A priori tests are those that are planned before an ANOVA is calculated.

Accepted Answer

A) True 
 B)False

Question 8

The mean square error will be a good estimate of the population variance when

Accepted Answer

A)   when the null hypothesis is true
B)   when the null hypothesis is false
C)   regardless of whether the null hypothesis is true or falseD) All of the above
E) B) and C)

Question 9

Cause and effect statements between the independent and dependent variable are strongest when

Accepted Answer

A)   the distributions of the dependent variable are normal
B)   participants have been assigned randomly to conditions
C)   the distributions of the dependent variable have equal variances
D)   there are three or more levels of the independent variable.E) None of the above
F) B) and C)

Question 10

The following hypothetical data are scores on a test that measures a person's attitudes toward fate. (An example of such a test is Rotter's internal-external scale.) A high score indicates that the person views fate as being out of his or her control. Low scores indicate that he or she feels directly responsible for what happens. Calculate an ANOVA and test for differences among the three social classes. Calculate f. Calculate a HSD and a d value for the two samples with the most different attitude toward fate. Write a verbal description of what your analyses show. $$\begin{array} { c c c } 
\text { Lower Class } & \text { Middle Class } & \text { Upper Class } \
\hline 12 & 13 & 6 \
10 & 4 & 5 \
11 & 9 & 8 \
9 & 6 & 2 \
7 & 12 & 2 \
3 & 10 & 1
\end{array}$$ Fill in: Independent variable: ____________Dependent variable: __________

Accepted Answer

Independent variable: social class
Depen...

Question 11

The effect size index, f, is appropriate for one-way ANOVA data.

Accepted Answer

A) True 
 B)False

Question 12

When the null hypothesis is false, which of the following is a good estimate of the population variance?

Accepted Answer

A)   MStreat
B)   MSerror
C)   both of the descriptive alternatives are correct
D)   neither of the descriptive alternatives is correct.E) None of the above
F) B) and C)

Question 13

If the F value obtained from the table is larger than the F value obtained from the data, you should

Accepted Answer

A)   reject the null hypothesis
B)   retain the null hypothesis
C)   either of the descriptive alternatives, depending on the size of the obtained F
D)   either of the descriptive alternatives, depending on the df.E) B) and C)
F) All of the above

Question 14

Credit for the development of ANOVA goes to

Accepted Answer

A)   Francis Galton, a geneticist
B)   Karl Pearson, a statistician
C)   Ronald Fisher, a biologist
D)   George Snedecor, a psychologist.E) B) and D)
F) All of the above

Question 15

According to the study in your text, the greatest degree of persistence would occur after training on a __________________ schedule.

Accepted Answer

A)   continuous reinforcement
B)   fixed-ratio 2
C)   fixed-ratio 4
D)   fixed-ratio 8.E) A) and B)
F) A) and C)

Question 16

For a one-way ANOVA, an effect size index (f)  that qualifies as small is

Accepted Answer

A)   0.05
B)   0.25
C)   both of the descriptive alternatives are correct
D)   neither of the descriptive alternatives is correct.E) B) and D)
F) B) and C)

Question 17

If the null hypothesis is true, an analysis of variance determines the probability that the samples

Accepted Answer

A)   came from the same population
B)   came from different populations
C)   came from an F distribution
D)   are random samples.E) B) and C)
F) C) and D)

Question 18

If the F value obtained from the data is .001 and df = 2,25, you should

Accepted Answer

A)   reject the null hypothesis
B)   retain the null hypothesis
C)   rework the problem such a value is impossible.D) A) and C)
E) All of the above

Question 19

Ronald A. Fisher gets credit for developing

Accepted Answer

A)   analysis of variance
B)   the t distribution
C)   both of the descriptive alternatives are correct
D)   neither of the descriptive alternatives is correctE) B) and D)
F) None of the above

Question 20

For a one-way ANOVA, an effect size index (f)  that is considered large is

Accepted Answer

A)   0.50
B)   1.00
C)   1.50
D)   all of the descriptive alternatives are correct
E)   none of the descriptive alternatives are correct.F) A) and E)
G) A) and C)

Exam 11: Analysis of Variance: One-Way Classification

If the F value obtained from the table is larger than the F value obtained from the data, you should

Correct Answer
verified

According to the study in your text, the greatest degree of persistence would occur after training on a __________________ schedule.

Correct Answer
verified

The mean square error will be a good estimate of the population variance when

Correct Answer
verified

A priori tests are those that are planned before an ANOVA is calculated.

Correct Answer
verified

If the F value obtained from the data is .001 and df = 2,25, you should

Correct Answer
verified

Ronald A. Fisher gets credit for developing

Correct Answer
verified

If an ANOVA led to the statement, "p < .05"you can be sure that the data produced an F ratio that is greater than

Correct Answer
verified

Correct Answer
verified
Independent variable: social class
Depen...
View Answer

A group of 50 participants was divided equally into 5 groups. A Tukey HSD produced a value that led to the conclusion that Mean 1 was significantly larger than Mean 2, p < .05. Which of the following situations would lead to such a conclusion?

Correct Answer
verified

For a one-way ANOVA, an effect size index (f) that qualifies as small is

Correct Answer
verified

If the null hypothesis is true, an analysis of variance determines the probability that the samples

Correct Answer
verified

Correct Answer
verified

Suppose MS_treatis calculated for three samples that are from a population with a mean = 10. Under which condition below would MS_treatcertainly become larger?

Correct Answer
verified

Credit for the development of ANOVA goes to

Correct Answer
verified

When the null hypothesis is false, which of the following is a good estimate of the population variance?

Correct Answer
verified

For a one-way ANOVA, an effect size index (f) that is considered large is

Correct Answer
verified

Cause and effect statements between the independent and dependent variable are strongest when

Correct Answer
verified

The amount of difference that exists among the populations with unknown means (which you have sampled from) is the issue of

Correct Answer
verified

For a one-way ANOVA, an effect size index (f) that qualifies as small is

Correct Answer
verified

The effect size index, f, is appropriate for one-way ANOVA data.

Correct Answer
verified

Exam 11: Analysis of Variance: One-Way Classification

If the F value obtained from the table is larger than the F value obtained from the data, you should

Correct AnswerverifiedShow Answer

According to the study in your text, the greatest degree of persistence would occur after training on a __________________ schedule.

Correct AnswerverifiedShow Answer

The mean square error will be a good estimate of the population variance when

Correct AnswerverifiedShow Answer

A priori tests are those that are planned before an ANOVA is calculated.

Correct AnswerverifiedShow Answer

If the F value obtained from the data is .001 and df = 2,25, you should

Correct AnswerverifiedShow Answer

Ronald A. Fisher gets credit for developing

Correct AnswerverifiedShow Answer

If an ANOVA led to the statement, "p < .05"you can be sure that the data produced an F ratio that is greater than

Correct AnswerverifiedShow Answer

Correct AnswerverifiedIndependent variable: social classDepen...View AnswerShow Answer

A group of 50 participants was divided equally into 5 groups. A Tukey HSD produced a value that led to the conclusion that Mean 1 was significantly larger than Mean 2, p < .05. Which of the following situations would lead to such a conclusion?

Correct AnswerverifiedShow Answer

For a one-way ANOVA, an effect size index (f) that qualifies as small is

Correct AnswerverifiedShow Answer

If the null hypothesis is true, an analysis of variance determines the probability that the samples

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Suppose MStreat is calculated for three samples that are from a population with a mean = 10. Under which condition below would MStreat certainly become larger?

Correct AnswerverifiedShow Answer

Credit for the development of ANOVA goes to

Correct AnswerverifiedShow Answer

When the null hypothesis is false, which of the following is a good estimate of the population variance?

Correct AnswerverifiedShow Answer

For a one-way ANOVA, an effect size index (f) that is considered large is

Correct AnswerverifiedShow Answer

Cause and effect statements between the independent and dependent variable are strongest when

Correct AnswerverifiedShow Answer

The amount of difference that exists among the populations with unknown means (which you have sampled from) is the issue of

Correct AnswerverifiedShow Answer

For a one-way ANOVA, an effect size index (f) that qualifies as small is

Correct AnswerverifiedShow Answer

The effect size index, f, is appropriate for one-way ANOVA data.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
Independent variable: social class
Depen...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Suppose MS_treatis calculated for three samples that are from a population with a mean = 10. Under which condition below would MS_treatcertainly become larger?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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