Question 1

When and why is it necessary to use post hoc tests?​

Accepted Answer

​Post hoc tests are necessary when the F

Question 2

Calculate Tukey's HSD and eta-squared for the following ANOVA.​

Accepted Answer

HSD_.05 =3.02

Question 3

If between-groups variance is small, then we have not observed​

Accepted Answer

A) experimenter effects. 
B) an effect of the dependent variable. 
C) enough samples. 
D) an effect of the independent variable. 
A) experimenter effects. 
B) an effect of the dependent variable. 
C) enough samples. 
D) an effect of the independent variable.

Question 4

If the null hypothesis for an ANOVA is true, then the F-ratio should be​

Accepted Answer

A) greater than 5.00. 
B) a negative number. 
C) 0.00. 
D) 1.00. 
A) greater than 5.00. 
B) a negative number. 
C) 0.00. 
D) 1.00.

Question 5

If a randomized ANOVA produced SSbetween = 35 and SSwithin = 15, then h2 would be​

Accepted Answer

A) 35/50 x 100 = 70. 
B) 50/35 x 100 = 143. 
C) 15/50 x 100 = 30. 
D) unable to be determined. 
A) 35/50 x 100 = 70. 
B) 50/35 x 100 = 143. 
C) 15/50 x 100 = 30. 
D) unable to be determined.

Question 6

Which of the following is not an assumption of the one-way repeated measures ANOVA?

Accepted Answer

A) The data are interval-ratio in scale. 
B) The underlying distribution is normally distributed. 
C) The variances among the populations being compared are homogeneous. 
D) The groups are independent. 
A) The data are interval-ratio in scale. 
B) The underlying distribution is normally distributed. 
C) The variances among the populations being compared are homogeneous. 
D) The groups are independent.

Question 7

The larger the within-groups (error) variance​

Accepted Answer

A) the more difficult it becomes to show the effects of experimental treatment. 
B) the easier it becomes to show the effects of experimental treatment. 
C) the more difficult it becomes to perform the F test. 
D) the easier it becomes to show a causal effect of the independent variable on the dependent variable. 
A) the more difficult it becomes to show the effects of experimental treatment. 
B) the easier it becomes to show the effects of experimental treatment. 
C) the more difficult it becomes to perform the F test. 
D) the easier it becomes to show a causal effect of the independent variable on the dependent variable.

Question 8

Whenever the F-ratio is near 1.00 it means that

Accepted Answer

A) a mistake has been made in the computation.​ 
B) there are large systematic effects present. 
C) the experimental manipulation probably had the predicted effects. 
D) the between-groups variation is no larger than would be expected by chance alone and no larger than the within-groups variance. 
A) a mistake has been made in the computation.​ 
B) there are large systematic effects present. 
C) the experimental manipulation probably had the predicted effects. 
D) the between-groups variation is no larger than would be expected by chance alone and no larger than the within-groups variance.

Question 9

Post hoc tests are used to​

Accepted Answer

A) determine whether an F-ratio is significant. 
B) determine whether h2 needs to be computed. 
C) make all pairwise comparisons between group means.​ 
D) all of the options are correct​ 
A) determine whether an F-ratio is significant. 
B) determine whether h2 needs to be computed. 
C) make all pairwise comparisons between group means.​ 
D) all of the options are correct​

Question 10

Systematic variance may consist of​

Accepted Answer

A) both experimental effects and confounding variables. 
B) experimental effects. 
C) confounding variables. 
D) experimenter effects. 
A) both experimental effects and confounding variables. 
B) experimental effects. 
C) confounding variables. 
D) experimenter effects.

Question 11

When the variance _____ the groups is _____ and the variance _____ the groups is _____, we can expect a large F-ratio.​

Accepted Answer

A) between; large; within; large 
B) between; small; within; small 
C) between; large; within; small 
D) between; small; within; large 
A) between; large; within; large 
B) between; small; within; small 
C) between; large; within; small 
D) between; small; within; large

Question 12

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p

Accepted Answer

A) 24 
B) 25 
C) 39 
D) 13 
A) 24 
B) 25 
C) 39 
D) 13

Question 13

The null hypothesis for a one-way randomized ANOVA states​

Accepted Answer

A) H0: m1 = m2 = m3. 
B) H0: m1 ¹ m2 ¹ m3. 
C) Ha: m1 = m2 = m3. 
D) Ha: m1 ¹ m2 ¹ m3. 
A) H0: m1 = m2 = m3. 
B) H0: m1 ¹ m2 ¹ m3. 
C) Ha: m1 = m2 = m3. 
D) Ha: m1 ¹ m2 ¹ m3.

Question 14

Explain when it would be appropriate to use a t test versus a one-way analysis of variance.​

Accepted Answer

A t test is appropriate when there is on

Question 15

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p ​

Accepted Answer

A) 2 
B) 3 
C) 24 
D) 48 
A) 2 
B) 3 
C) 24 
D) 48

When and why is it necessary to use post hoc tests?

Calculate Tukey's HSD and eta-squared for the following ANOVA.

If between-groups variance is small, then we have not observed

If the null hypothesis for an ANOVA is true, then the F-ratio should be

If a randomized ANOVA produced SS_between = 35 and SS_within = 15, then h² would be

Which of the following is not an assumption of the one-way repeated measures ANOVA?

The larger the within-groups (error) variance

Whenever the F-ratio is near 1.00 it means that

Post hoc tests are used to

Systematic variance may consist of

When the variance ___ the groups is _ and the variance _ the groups is ___, we can expect a large F-ratio.

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p

The null hypothesis for a one-way randomized ANOVA states

Explain when it would be appropriate to use a t test versus a one-way analysis of variance.

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

Exam 11: Experimental Design and Analysis III

When and why is it necessary to use post hoc tests?​

Calculate Tukey's HSD and eta-squared for the following ANOVA.​

If between-groups variance is small, then we have not observed​

If the null hypothesis for an ANOVA is true, then the F-ratio should be​

If a randomized ANOVA produced SSbetween = 35 and SSwithin = 15, then h2 would be​

Which of the following is not an assumption of the one-way repeated measures ANOVA?

The larger the within-groups (error) variance​

Whenever the F-ratio is near 1.00 it means that

Post hoc tests are used to​

Systematic variance may consist of​

When the variance _____ the groups is _____ and the variance _____ the groups is _____, we can expect a large F-ratio.​

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p

The null hypothesis for a one-way randomized ANOVA states​

Explain when it would be appropriate to use a t test versus a one-way analysis of variance.​

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p ​

Thinking Like a Scientist

Getting Started

Defining Measuring and Manipulating Variables

Descriptive Methods

Data Organization and Descriptive Statistics

Correlational Methods and Statistics

Probability and Hypothesis Testing

Introduction to Inferential Statistics

Experimental Design and Analysis I

Experimental Design and Analysis II

Experimental Design and Analysis Iv

Quasi Experimental and Single Case Designs

Nonparametric Inferential Statistics

APA Communication Guidelines

Filters

When and why is it necessary to use post hoc tests?

Calculate Tukey's HSD and eta-squared for the following ANOVA.

If between-groups variance is small, then we have not observed

If the null hypothesis for an ANOVA is true, then the F-ratio should be

If a randomized ANOVA produced SS_between = 35 and SS_within = 15, then h² would be

The larger the within-groups (error) variance

Post hoc tests are used to

Systematic variance may consist of

When the variance ___ the groups is _ and the variance _ the groups is ___, we can expect a large F-ratio.

The null hypothesis for a one-way randomized ANOVA states

Explain when it would be appropriate to use a t test versus a one-way analysis of variance.

If, for a repeated measures ANOVA, F(2, 24) = 4.45, p