Question 1

The probability of making at least one type I error across a set of comparison is referred to as ______.

Accepted Answer

A)  total error 
B)  unpredicted error 
C)  explained error 
D)  familywise error 
A)  total error 
B)  unpredicted error 
C)  explained error 
D)  familywise error

Question 2

The theoretical distribution of ______ is represented by ______ because ______.   Figure A   Figure B

Accepted Answer

A)  F-ratios; Figure A; they can only be positive 
B)  t-tests; Figure A; they can be both positive or negative 
C)  F-ratios; Figure B; they can be both positive or negative 
D)  t-tests; Figure B; they can only be positive 
A)  F-ratios; Figure A; they can only be positive 
B)  t-tests; Figure A; they can be both positive or negative 
C)  F-ratios; Figure B; they can be both positive or negative 
D)  t-tests; Figure B; they can only be positive

Question 3

A study reports the following statistic: F(2,33) = 1.16. What is N (the number of participants in each group)?

Accepted Answer

A)  2 
B)  3 
C)  12 
D)  33 
A)  2 
B)  3 
C)  12 
D)  33

Question 4

A researcher collects data from six groups and eventually calculates a value of 6.75 for MSBG. What is the value for SSBG?

Accepted Answer

A)  5 
B)  6.75 
C)  33.75 
D)  Cannot be calculated with information provided 
A)  5 
B)  6.75 
C)  33.75 
D)  Cannot be calculated with information provided

Question 5

Betty conducts a one-way ANOVA comparing four groups, each of which consists of 10 participants (N = 10). In this situation, what is dfWG?

Accepted Answer

A)  3 
B)  9 
C)  36 
D)  40 
A)  3 
B)  9 
C)  36 
D)  40

Question 6

Which is the appropriate method for controlling familywise error in a situation that involves comparing each group in a research study with a single reference group?

Accepted Answer

A)  Dunnett Test 
B)  Scheffé Test 
C)  Tukey Test 
D)  Cohen d 
A)  Dunnett Test 
B)  Scheffé Test 
C)  Tukey Test 
D)  Cohen d

Question 7

______ are analytical comparisons that involve more than two groups.

Accepted Answer

A)  Complex comparisons 
B)  Simple comparisons 
C)  Unplanned comparisons 
D)  Planned comparisons 
A)  Complex comparisons 
B)  Simple comparisons 
C)  Unplanned comparisons 
D)  Planned comparisons

Question 8

______ variability may also be thought of as ______.

Accepted Answer

A)  Between-group; 'error' 
B)  Within-group; 'error' 
C)  Between-group; 'significant' 
D)  Within-group; 'effect' 
A)  Between-group; 'error' 
B)  Within-group; 'error' 
C)  Between-group; 'significant' 
D)  Within-group; 'effect'

Question 9

The theoretical distribution of F-ratios is ______ because ______.

Accepted Answer

A)  bell-curve shaped; there are an infinite number of F-ratios 
B)  skewed; F-ratios are based on squared deviations 
C)  normal; F-ratios can be either positive or negative 
D)  asymmetrical; you can only support rather than prove research hypotheses 
A)  bell-curve shaped; there are an infinite number of F-ratios 
B)  skewed; F-ratios are based on squared deviations 
C)  normal; F-ratios can be either positive or negative 
D)  asymmetrical; you can only support rather than prove research hypotheses

Question 10

As there is a growing concern about alcohol-related problems on college campuses, a team of researchers was interested in studying students' perceptions about alcohol consumption-more specifically, in how students define a "drink" (White et al, 2004). These researchers were interested in seeing whether the size of a cup influences how much beer students will pour into the cup. In their study students poured what they believed were 12 ounces of beer into one of three cups of different sizes (16, 24, or 32 ounces). They hypothesized that the larger the cup, the more beer students would pour. The results of their analyses are presented below:
    You decide to conduct the analytical comparison of 16 oz vs. 24 oz.
In conducting this analytical comparison, how should the null and alternative hypotheses be stated?

Accepted Answer

A)  H0: all μs are not equal; H1: not all μs are equal 
B)  H0: μ16 oz = μ24 oz; H1: μ16 oz ≠ μ24 oz 
C)  H0: 1 ≠ 2; H1: 1 = 2 
D)    
A)  H0: all μs are not equal; H1: not all μs are equal 
B)  H0: μ16 oz = μ24 oz; H1: μ16 oz ≠ μ24 oz 
C)  H0: 1 ≠ 2; H1: 1 = 2 
D)

Question 11

The degrees of freedom ______ indicates ______.

Accepted Answer

A)  dfBG; the size of the sample 
B)  dfWG; the number of groups being compared 
C)  dfBG; within-group variability 
D)  dfWG; the size of the sample 
A)  dfBG; the size of the sample 
B)  dfWG; the number of groups being compared 
C)  dfBG; within-group variability 
D)  dfWG; the size of the sample

Question 12

A study reports the F-ratio F(2,15) = 2.32. The TOTAL sample size (combining the different groups) was ______.

Accepted Answer

A)  17 
B)  18 
C)  30 
D)  cannot be calculated with information provided 
A)  17 
B)  18 
C)  30 
D)  cannot be calculated with information provided

Question 13

If an F ratio is ______ the critical value, I will ______ the null hypothesis and conclude that ______.

Accepted Answer

A)  greater than; not reject; the groups are not all equal to each other 
B)  greater than; reject; all of the groups are different from each other 
C)  less than; not reject; the groups do not differ significantly from each other 
D)  less than; reject; the groups are all equal to each other 
A)  greater than; not reject; the groups are not all equal to each other 
B)  greater than; reject; all of the groups are different from each other 
C)  less than; not reject; the groups do not differ significantly from each other 
D)  less than; reject; the groups are all equal to each other

Question 14

______ are analytical comparisons that involve only two groups.

Accepted Answer

A)  Complex comparisons 
B)  Simple comparisons 
C)  Unplanned comparisons 
D)  Planned comparisons 
A)  Complex comparisons 
B)  Simple comparisons 
C)  Unplanned comparisons 
D)  Planned comparisons

Question 15

______ is the probability of making at least one type I error across a set of comparisons.

Accepted Answer

A)  Type II error 
B)  Familywise error 
C)  Simple error 
D)  Complex error 
A)  Type II error 
B)  Familywise error 
C)  Simple error 
D)  Complex error

Question 16

A researcher collects data from four groups (each of whom consists of 5 respondents). Eventually the researcher calculates a value of 4.56 MSBG. What is the value for SSBG?

Accepted Answer

A)  13.68 
B)  18.24 
C)  22.80 
D)  86.64 
A)  13.68 
B)  18.24 
C)  22.80 
D)  86.64

Question 17

A researcher hypothesizes that freshmen spend more time studying than sophomores, who spend more time studying than juniors, and so on. In conducting a one-way ANOVA with this data, how can the null hypothesis (H0) be stated?

Accepted Answer

A)  H0: all μs are different 
B)  H0: not all μs are different 
C)  H0: all μs are equal 
D)  H0: not all μs are equal 
A)  H0: all μs are different 
B)  H0: not all μs are different 
C)  H0: all μs are equal 
D)  H0: not all μs are equal

Question 18

Arnold compares the means of three groups and calculates a value of -2.01 for the F-ratio. This implies ______.

Accepted Answer

A)  the mean of the first group is the highest of the three groups 
B)  the mean of the third group is the highest of the three groups 
C)  the differences between the means are statistically significant 
D)  he has made an error in his calculations 
A)  the mean of the first group is the highest of the three groups 
B)  the mean of the third group is the highest of the three groups 
C)  the differences between the means are statistically significant 
D)  he has made an error in his calculations

Question 19

A researcher collects data from three groups and eventually calculates a value of 9.78 for MSBG. What is the value for SSBG?

Accepted Answer

A)  4.89 
B)  19.56 
C)  29.34 
D)  39.12 
A)  4.89 
B)  19.56 
C)  29.34 
D)  39.12

Question 20

A researcher calculates an F-ratio comparing the GPAs of three different SJSU majors: Major A (M = 2.70), Major B (M = 2.87) and Major C (M = 3.01). If she makes the decision to NOT reject the null hypothesis, what is the most specific and appropriate conclusion she can draw?

Accepted Answer

A)  The SAT scores for the three groups are all different from each other. 
B)  The analysis supports the research hypothesis. 
C)  The GPAs of the three majors are not significantly different. 
D)  No conclusion can be determined without conducting further analyses. 
A)  The SAT scores for the three groups are all different from each other. 
B)  The analysis supports the research hypothesis. 
C)  The GPAs of the three majors are not significantly different. 
D)  No conclusion can be determined without conducting further analyses.

The probability of making at least one type I error across a set of comparison is referred to as ______.

The theoretical distribution of is represented by because __. Figure A Figure B

A study reports the following statistic: F(2,33) = 1.16. What is N (the number of participants in each group)?

A researcher collects data from six groups and eventually calculates a value of 6.75 for MSBG. What is the value for SSBG?

Betty conducts a one-way ANOVA comparing four groups, each of which consists of 10 participants (N = 10). In this situation, what is dfWG?

Which is the appropriate method for controlling familywise error in a situation that involves comparing each group in a research study with a single reference group?

______ are analytical comparisons that involve more than two groups.

variability may also be thought of as .

The theoretical distribution of F-ratios is because .

The degrees of freedom indicates .

A study reports the F-ratio F(2,15) = 2.32. The TOTAL sample size (combining the different groups) was ______.

If an F ratio is the critical value, I will the null hypothesis and conclude that __.

______ are analytical comparisons that involve only two groups.

______ is the probability of making at least one type I error across a set of comparisons.

A researcher collects data from four groups (each of whom consists of 5 respondents). Eventually the researcher calculates a value of 4.56 MSBG. What is the value for SSBG?

A researcher hypothesizes that freshmen spend more time studying than sophomores, who spend more time studying than juniors, and so on. In conducting a one-way ANOVA with this data, how can the null hypothesis (H₀) be stated?

Arnold compares the means of three groups and calculates a value of -2.01 for the F-ratio. This implies ______.

A researcher collects data from three groups and eventually calculates a value of 9.78 for MSBG. What is the value for SSBG?

A researcher calculates an F-ratio comparing the GPAs of three different SJSU majors: Major A (M = 2.70), Major B (M = 2.87) and Major C (M = 3.01). If she makes the decision to NOT reject the null hypothesis, what is the most specific and appropriate conclusion she can draw?

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Testing One Sample Mean

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

Two-Way Analysis of Variance Anova

Correlation

Linear Regression and Multiple Correlation

Chi-Square

Filters

Exam 11: One-Way Analysis of Variance Anova

The probability of making at least one type I error across a set of comparison is referred to as ______.

The theoretical distribution of ______ is represented by ______ because ______. Figure A Figure B

A study reports the following statistic: F(2,33) = 1.16. What is N (the number of participants in each group)?

A researcher collects data from six groups and eventually calculates a value of 6.75 for MSBG. What is the value for SSBG?

Betty conducts a one-way ANOVA comparing four groups, each of which consists of 10 participants (N = 10). In this situation, what is dfWG?

Which is the appropriate method for controlling familywise error in a situation that involves comparing each group in a research study with a single reference group?

______ are analytical comparisons that involve more than two groups.

______ variability may also be thought of as ______.

The theoretical distribution of F-ratios is ______ because ______.

The degrees of freedom ______ indicates ______.

A study reports the F-ratio F(2,15) = 2.32. The TOTAL sample size (combining the different groups) was ______.

If an F ratio is ______ the critical value, I will ______ the null hypothesis and conclude that ______.

______ are analytical comparisons that involve only two groups.

______ is the probability of making at least one type I error across a set of comparisons.

A researcher collects data from four groups (each of whom consists of 5 respondents). Eventually the researcher calculates a value of 4.56 MSBG. What is the value for SSBG?

A researcher hypothesizes that freshmen spend more time studying than sophomores, who spend more time studying than juniors, and so on. In conducting a one-way ANOVA with this data, how can the null hypothesis (H0) be stated?

Arnold compares the means of three groups and calculates a value of -2.01 for the F-ratio. This implies ______.

A researcher collects data from three groups and eventually calculates a value of 9.78 for MSBG. What is the value for SSBG?

A researcher calculates an F-ratio comparing the GPAs of three different SJSU majors: Major A (M = 2.70), Major B (M = 2.87) and Major C (M = 3.01). If she makes the decision to NOT reject the null hypothesis, what is the most specific and appropriate conclusion she can draw?

Introduction to Statistics

Examining Data: Tables and Figures

Measures of Central Tendency

Measures of Variability

Normal Distributions

Probability and Hypothesis Testing

Testing One Sample Mean

Estimating the Mean of a Population

Testing the Difference Between Two Means

Errors in Hypothesis Testing, Statistical Power, and Effect Size

Two-Way Analysis of Variance Anova

Correlation

Linear Regression and Multiple Correlation

Chi-Square

Filters

The theoretical distribution of is represented by because __. Figure A Figure B

variability may also be thought of as .

The theoretical distribution of F-ratios is because .

The degrees of freedom indicates .

If an F ratio is the critical value, I will the null hypothesis and conclude that __.

A researcher hypothesizes that freshmen spend more time studying than sophomores, who spend more time studying than juniors, and so on. In conducting a one-way ANOVA with this data, how can the null hypothesis (H₀) be stated?