Question 1

When   is true,all scores in the experiment come from the same population so   will be ______   .

Accepted Answer

A) less than 
B) greater than 
C) equal to 
D) different from 
A) less than 
B) greater than 
C) equal to 
D) different from C

Question 2

In a one-way between-subjects ANOVA,the mean square within groups (   )describes

Accepted Answer

A) the variability of individual scores in the sample. 
B) an estimate of the variability of individual scores in the population. 
C) differences between the means as an estimate of the differences between means found in the population. 
D) the total variability in the population. 
A) the variability of individual scores in the sample. 
B) an estimate of the variability of individual scores in the population. 
C) differences between the means as an estimate of the differences between means found in the population. 
D) the total variability in the population. B

Question 3

Which of the following is not true of the analysis of variance?

Accepted Answer

A) It has a higher rate of Type I error than the two-sample t-tests. 
B) It determines whether significant differences exist in an experiment. 
C) It is used for experiments with two or more sample means. 
D) It is a parametric procedure. 
A) It has a higher rate of Type I error than the two-sample t-tests. 
B) It determines whether significant differences exist in an experiment. 
C) It is used for experiments with two or more sample means. 
D) It is a parametric procedure. A

Question 4

Post hoc comparisons are used in one-way ANOVA to compare all the possible

Accepted Answer

A) variances to each other. 
B) pairs of means from a factor,one pair at a time,to determine which are significantly different from each other. 
C) pairs of variances from a factor,one pair at a time,to determine which are significantly different from each other. 
D) pairs of means from different factors to determine whether they are significantly different from each other. 
A) variances to each other. 
B) pairs of means from a factor,one pair at a time,to determine which are significantly different from each other. 
C) pairs of variances from a factor,one pair at a time,to determine which are significantly different from each other. 
D) pairs of means from different factors to determine whether they are significantly different from each other.

Question 5

Corey is researching the effect of memory-enhancing,memory-impairing,and memory- neutral drugs on the ability of rats to run a maze.He randomly assigns 15 rats to each treatment.If he calculates   and   what is his   ?

Accepted Answer

A) 9.44 
B) 5 
C) 37 
D) 12.17 
A) 9.44 
B) 5 
C) 37 
D) 12.17

Question 6

When Tukey's HSD test is used,two means are significantly different if the absolute difference between them is

Accepted Answer

A) greater than the HSD. 
B) less than the HSD. 
C) equal to the HSD. 
D) zero. 
A) greater than the HSD. 
B) less than the HSD. 
C) equal to the HSD. 
D) zero.

Question 7

A study of the effect of IQ on musical ability involved three levels of IQ-below average,average,and above average.A total of 36 participants were involved.Of the 36 participants,8 were determined to have below-average intelligence,18 were of average intelligence,and 10 were of above-average intelligence.The   _____,   _____,and   _____.

Accepted Answer

A) 33,2,35 
B) 2,33,35 
C) 2,35,33 
D) 35,33,2 
A) 33,2,35 
B) 2,33,35 
C) 2,35,33 
D) 35,33,2

Question 8

An educational psychologist is interested in determining whether attitudes toward school change with age.She randomly selects 30 seventh-graders,30 ninth-graders,and 30 eleventh-graders and administers a "Do you like school?" test.In terms of ANOVA symbols,what is the value of N in the experiment?

Accepted Answer

A) 3 
B) 90 
C) 30 
D) 1 
A) 3 
B) 90 
C) 30 
D) 1

Question 9

The term condition matches which of the following ANOVA terms?

Accepted Answer

A) Treatment effect 
B) Factor 
C) Mean square 
D) Level 
A) Treatment effect 
B) Factor 
C) Mean square 
D) Level

Question 10

Treatment variance is defined as

Accepted Answer

A) the differences of scores from the mean of their condition. 
B) the differences between the populations produced by a factor. 
C) the inherent variability in the scores,to a certain extent. 
D) sampling error. 
A) the differences of scores from the mean of their condition. 
B) the differences between the populations produced by a factor. 
C) the inherent variability in the scores,to a certain extent. 
D) sampling error.

Question 11

Analysis of variance is the most common inferential statistical procedure used to analyze experiments because

Accepted Answer

A) it is the only statistical procedure that can test either between-subjects factors or within-subjects factors. 
B) there are several different versions of it,and so it can test for possible treatment effects more accurately than the two-sample tests. 
C) most researchers are more interested in whether there are differences in the variance among the conditions than in whether there are differences in the means. 
D) there are several different versions of it,and so it can be used with many different experimental designs. 
A) it is the only statistical procedure that can test either between-subjects factors or within-subjects factors. 
B) there are several different versions of it,and so it can test for possible treatment effects more accurately than the two-sample tests. 
C) most researchers are more interested in whether there are differences in the variance among the conditions than in whether there are differences in the means. 
D) there are several different versions of it,and so it can be used with many different experimental designs.

Question 12

The larger the value of   ,

Accepted Answer

A) the more consistently the factor caused particular scores in a particular condition. 
B) the less consistently the factor caused particular scores in a particular condition. 
C) the less important the effect of the factor in explaining the differences in scores. 
D) the more variable the effects of the treatment on the scores. 
A) the more consistently the factor caused particular scores in a particular condition. 
B) the less consistently the factor caused particular scores in a particular condition. 
C) the less important the effect of the factor in explaining the differences in scores. 
D) the more variable the effects of the treatment on the scores.

Question 13

Which of the following would not result in an increase in the power of ANOVA?

Accepted Answer

A) Increasing the differences between the conditions of the independent variable 
B) Increasing the variability of the scores within each condition 
C) Increasing the n of small samples 
D) Reducing the variability of the scores within each condition 
A) Increasing the differences between the conditions of the independent variable 
B) Increasing the variability of the scores within each condition 
C) Increasing the n of small samples 
D) Reducing the variability of the scores within each condition

Question 14

The experimentwise error rate is defined as the probability of making a Type I error

Accepted Answer

A) when comparing one pair of means in an experiment where there are more than two means. 
B) when computing confidence intervals for level means. 
C) anywhere among the comparisons of means. 
D) when comparing the means of two or more factors in an experiment. 
A) when comparing one pair of means in an experiment where there are more than two means. 
B) when computing confidence intervals for level means. 
C) anywhere among the comparisons of means. 
D) when comparing the means of two or more factors in an experiment.

Question 15

Treatment variance is equal to

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
A)    . 
B)    . 
C)    . 
D)    .

Question 16

Previously,we've referred to the result of dividing a sum of squares by degrees of freedom as variance.In an ANOVA,this is referred to as which of the following terms?

Accepted Answer

A) Treatment effect 
B) Factor 
C) Mean square 
D) Sum of squared deviations 
A) Treatment effect 
B) Factor 
C) Mean square 
D) Sum of squared deviations

Question 17

The independent variable matches which of the following ANOVA terms?

Accepted Answer

A) Treatment effect 
B) Factor 
C) Mean square 
D) Level 
A) Treatment effect 
B) Factor 
C) Mean square 
D) Level

Question 18

In an experiment on the effect of caffeine on time to complete a manual task,Paolo has three treatments-0 mg,150 mg,and 300 mg of caffeine.He randomly assigns an equal number of 39 participants to his 3 conditions.If he calculates   and   ,what is his   ?

Accepted Answer

A) 5.90 
B) 27.95 
C) 30.90 
D) 2.95 
A) 5.90 
B) 27.95 
C) 30.90 
D) 2.95

Question 19

Sum of squares is defined as the sum of

Accepted Answer

A) every number squared. 
B) every mean squared. 
C) the squared deviations between the mean and each score. 
D) the squared deviations between the mean and each score,divided by the degrees of freedom. 
A) every number squared. 
B) every mean squared. 
C) the squared deviations between the mean and each score. 
D) the squared deviations between the mean and each score,divided by the degrees of freedom.

Question 20

If   and the post hoc comparisons are significant,then the experimentwise probability of a Type I error is

Accepted Answer

A) equal to F1F1F1S1F1F1F10. 
B) greater than F1F1F1S1F1F1F10. 
C) equal to F1F1F1S1F1F1F10 multiplied by the number of post hoc comparisons made. 
D) equal to F1F1F1S1F1F1F10 divided by the number of post hoc comparisons made. 
A) equal to F1F1F1S1F1F1F10. 
B) greater than F1F1F1S1F1F1F10. 
C) equal to F1F1F1S1F1F1F10 multiplied by the number of post hoc comparisons made. 
D) equal to F1F1F1S1F1F1F10 divided by the number of post hoc comparisons made.

When is true,all scores in the experiment come from the same population so will be ______ .

In a one-way between-subjects ANOVA,the mean square within groups ( )describes

Which of the following is not true of the analysis of variance?

Post hoc comparisons are used in one-way ANOVA to compare all the possible

Corey is researching the effect of memory-enhancing,memory-impairing,and memory- neutral drugs on the ability of rats to run a maze.He randomly assigns 15 rats to each treatment.If he calculates and what is his ?

When Tukey's HSD test is used,two means are significantly different if the absolute difference between them is

An educational psychologist is interested in determining whether attitudes toward school change with age.She randomly selects 30 seventh-graders,30 ninth-graders,and 30 eleventh-graders and administers a "Do you like school?" test.In terms of ANOVA symbols,what is the value of N in the experiment?

The term condition matches which of the following ANOVA terms?

Treatment variance is defined as

Analysis of variance is the most common inferential statistical procedure used to analyze experiments because

The larger the value of ,

Which of the following would not result in an increase in the power of ANOVA?

The experimentwise error rate is defined as the probability of making a Type I error

Treatment variance is equal to

Previously,we've referred to the result of dividing a sum of squares by degrees of freedom as variance.In an ANOVA,this is referred to as which of the following terms?

The independent variable matches which of the following ANOVA terms?

In an experiment on the effect of caffeine on time to complete a manual task,Paolo has three treatments-0 mg,150 mg,and 300 mg of caffeine.He randomly assigns an equal number of 39 participants to his 3 conditions.If he calculates and ,what is his ?

Sum of squares is defined as the sum of

If and the post hoc comparisons are significant,then the experimentwise probability of a Type I error is

Introduction to Statistics

Statistics and the Research Process

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

Exam 13: The One-Way Analysis of Variance

When is true,all scores in the experiment come from the same population so will be ______ .

In a one-way between-subjects ANOVA,the mean square within groups ( )describes

Which of the following is not true of the analysis of variance?

Post hoc comparisons are used in one-way ANOVA to compare all the possible

Corey is researching the effect of memory-enhancing,memory-impairing,and memory- neutral drugs on the ability of rats to run a maze.He randomly assigns 15 rats to each treatment.If he calculates and what is his ?

When Tukey's HSD test is used,two means are significantly different if the absolute difference between them is

An educational psychologist is interested in determining whether attitudes toward school change with age.She randomly selects 30 seventh-graders,30 ninth-graders,and 30 eleventh-graders and administers a "Do you like school?" test.In terms of ANOVA symbols,what is the value of N in the experiment?

The term condition matches which of the following ANOVA terms?

Treatment variance is defined as

Analysis of variance is the most common inferential statistical procedure used to analyze experiments because

The larger the value of ,

Which of the following would not result in an increase in the power of ANOVA?

The experimentwise error rate is defined as the probability of making a Type I error

Treatment variance is equal to

Previously,we've referred to the result of dividing a sum of squares by degrees of freedom as variance.In an ANOVA,this is referred to as which of the following terms?

The independent variable matches which of the following ANOVA terms?

In an experiment on the effect of caffeine on time to complete a manual task,Paolo has three treatments-0 mg,150 mg,and 300 mg of caffeine.He randomly assigns an equal number of 39 participants to his 3 conditions.If he calculates and ,what is his ?

Sum of squares is defined as the sum of

If and the post hoc comparisons are significant,then the experimentwise probability of a Type I error is

Introduction to Statistics

Statistics and the Research Process

Frequency Distributions and Percentiles

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters