Question 1

If dftot = 16 and dfbet = 4 for a one-way ANOVA, what is dfwi?

Accepted Answer

A)  64 
B)  4 
C)  20 
D)  12 
A)  64 
B)  4 
C)  20 
D)  12

Question 2

What are the sources that contribute to between-treatments variance?

Accepted Answer

Individual differences, experi

Question 3

A pharmaceutical research company is studying a new non-addictive sleep medication. Participants who suffered from insomnia for over a year were randomly assigned to one of three groups. Group 1 is given a placebo, Group 2 is given 10 mg of the medication, and Group 3 is given 20 mg of the medication. The scores below represent the nightly average number of hours that the participants slept for a one-week period of time during the study. Conduct a one-way ANOVA using an α = .01. If appropriate, follow up with a measure of effect size and Tukey's HSD.

Accepted Answer

One-way ANOVA for new sleep medication:

Question 4

Conduct a one-way ANOVA for the scores below using an α = .05. If appropriate, follow up with Tukey's HSD.

Accepted Answer

One-way ANOVA without Tukey's HSD:
 @#IMG-DLM& Ste

Question 5

The value predicted by the F-statistic if treatment is not effective is

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  100 
A)  0 
B)  1 
C)  2 
D)  100

Question 6

Eta squared tells us the proportion of the total variability in a one-way ANOVA that is accounted for by _______________.

Accepted Answer

A)  chance 
B)  treatment 
C)  individual differences 
D)  experimental error 
A)  chance 
B)  treatment 
C)  individual differences 
D)  experimental error

Question 7

which is the correct formula for eta squared?

Accepted Answer

A)  SSbet/SStot 
B)  SStot/SSbet 
C)  SSwi/SStot 
D)  SStot/SSwi 
A)  SSbet/SStot 
B)  SStot/SSbet 
C)  SSwi/SStot 
D)  SStot/SSwi

Question 8

The F-value predicted by the null hypothesis is

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  100 
A)  0 
B)  1 
C)  2 
D)  100

Question 9

What is experiment-wise alpha level?

Accepted Answer

Experiment-wise alpha level is

Question 10

What are the sources that contribute to within-treatment variance?

Accepted Answer

Individual differences and exp

Question 11

Examples of within-treatment variance include all of the following, except

Accepted Answer

A)  body weight. 
B)  the effects of treatment. 
C)  motivation. 
D)  tolerance for discomfort. 
A)  body weight. 
B)  the effects of treatment. 
C)  motivation. 
D)  tolerance for discomfort.

Question 12

If you fail to reject the null hypothesis for a one-way ANOVA, then

Accepted Answer

A)  your obtained F-value was lower that Fcrit. 
B)  there were significant differences between means. 
C)  the alternative hypothesis has been supported. 
D)  your obtained F-value was higher that Fcrit. 
A)  your obtained F-value was lower that Fcrit. 
B)  there were significant differences between means. 
C)  the alternative hypothesis has been supported. 
D)  your obtained F-value was higher that Fcrit.

Question 13

The number of groups in a one-way ANOVA is represented by

Accepted Answer

A)  k 
B)  N 
C)  t 
D)  ∑Xtot 
A)  k 
B)  N 
C)  t 
D)  ∑Xtot

Question 14

One-way analysis of variance involves manipulating only one

Accepted Answer

A)  set of scores. 
B)  source of variance. 
C)  independent variable. 
D)  dependent variable. 
A)  set of scores. 
B)  source of variance. 
C)  independent variable. 
D)  dependent variable.

Question 15

If a researcher wants to compare more than two groups, she could use

Accepted Answer

A)  a three-sample t test. 
B)  an ANOVA test. 
C)  two-sample t tests to compare two groups at a time. 
D)  either "a" or "c" above. 
A)  a three-sample t test. 
B)  an ANOVA test. 
C)  two-sample t tests to compare two groups at a time. 
D)  either "a" or "c" above.

Question 16

The Studentized Range Statistic, needed to calculate Tukey's HSD, is symbolized as

Accepted Answer

A)  π 
B)  σ 
C)  η 
D)  q 
A)  π 
B)  σ 
C)  η 
D)  q

Question 17

To determine dfwi for a one-way ANOVA, use _________.

Accepted Answer

A)  k - N 
B)  N - 1 
C)  k - 1 
D)  N - k 
A)  k - N 
B)  N - 1 
C)  k - 1 
D)  N - k

Question 18

The F-statistic is the result of conducting a

Accepted Answer

A)  one-sample t test. 
B)  independent samples t test. 
C)  repeated measures t test. 
D)  one-way ANOVA. 
A)  one-sample t test. 
B)  independent samples t test. 
C)  repeated measures t test. 
D)  one-way ANOVA.

Question 19

Treatment variance is made up of

Accepted Answer

A)  individual differences. 
B)  experimental error. 
C)  the effects of treatment. 
D)  all of the above. 
A)  individual differences. 
B)  experimental error. 
C)  the effects of treatment. 
D)  all of the above.

Question 20

Given a sample size of n = 6 in each of 4 groups and an α = .01 for a one-way ANOVA, what is Fcrit?

Accepted Answer

A)  3.92 
B)  3.10 
C)  4.94 
D)  4.87 
A)  3.92 
B)  3.10 
C)  4.94 
D)  4.87

If df_tot = 16 and df_bet = 4 for a one-way ANOVA, what is df_wi?

What are the sources that contribute to between-treatments variance?

Conduct a one-way ANOVA for the scores below using an α = .05. If appropriate, follow up with Tukey's HSD.

The value predicted by the F-statistic if treatment is not effective is

Eta squared tells us the proportion of the total variability in a one-way ANOVA that is accounted for by _______________.

which is the correct formula for eta squared?

The F-value predicted by the null hypothesis is

What is experiment-wise alpha level?

What are the sources that contribute to within-treatment variance?

Examples of within-treatment variance include all of the following, except

If you fail to reject the null hypothesis for a one-way ANOVA, then

The number of groups in a one-way ANOVA is represented by

One-way analysis of variance involves manipulating only one

If a researcher wants to compare more than two groups, she could use

The Studentized Range Statistic, needed to calculate Tukey's HSD, is symbolized as

To determine df_wi for a one-way ANOVA, use _________.

The F-statistic is the result of conducting a

Treatment variance is made up of

Given a sample size of n = 6 in each of 4 groups and an α = .01 for a one-way ANOVA, what is F_crit?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 13: One-Way Analysis of Variance

If dftot = 16 and dfbet = 4 for a one-way ANOVA, what is dfwi?

What are the sources that contribute to between-treatments variance?

Conduct a one-way ANOVA for the scores below using an α = .05. If appropriate, follow up with Tukey's HSD.

The value predicted by the F-statistic if treatment is not effective is

Eta squared tells us the proportion of the total variability in a one-way ANOVA that is accounted for by _______________.

which is the correct formula for eta squared?

The F-value predicted by the null hypothesis is

What is experiment-wise alpha level?

What are the sources that contribute to within-treatment variance?

Examples of within-treatment variance include all of the following, except

If you fail to reject the null hypothesis for a one-way ANOVA, then

The number of groups in a one-way ANOVA is represented by

One-way analysis of variance involves manipulating only one

If a researcher wants to compare more than two groups, she could use

The Studentized Range Statistic, needed to calculate Tukey's HSD, is symbolized as

To determine dfwi for a one-way ANOVA, use _________.

The F-statistic is the result of conducting a

Treatment variance is made up of

Given a sample size of n = 6 in each of 4 groups and an α = .01 for a one-way ANOVA, what is Fcrit?

Organizing Data Using Tables and Graphs

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

If df_tot = 16 and df_bet = 4 for a one-way ANOVA, what is df_wi?

To determine df_wi for a one-way ANOVA, use _________.

Given a sample size of n = 6 in each of 4 groups and an α = .01 for a one-way ANOVA, what is F_crit?