Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

Suppose you're reading a result in a journal article that reports, F3, 13) = 4.19, p <.05.What do each of these values mean?

Accepted Answer

In F3, 13) = 4.19, p <.05, this is a significant result as denoted by p <.05.The degrees of freedom between and within are 3 and 13, respectively; the F-obtained value is 4.19.

Question 4

Suppose you perform an ANOVA on 18 subjects divided evenly into three groups according to age.Reading speed is measured and averaged for each of the three groups.The reading speed for the Young Group is 10; for the Middle Group, 12; and for the Older Group, 13.Your $F_{o b t}$ is 9.15.Use $\alpha$ = .05 
a.What are your degrees of freedom?
b.What is the appropriate $F_{c r i t}$ ? 
c.What should you conclude?

Accepted Answer

a.2, 15 
b.@#LAT-DLM&

c.Since @#LAT-DLM& , rejec

Question 5

Post hoc comparisons are used

Accepted Answer

A) prior to the calculation of $F_{o b t}$ to determine if an ANOVA is necessary. 
B) after $F_{o b t}$ is found to be significant. 
C) when we plan on comparing only certain specified pairs of sample means with each other. 
D) after $F_{o b t}$ is found to be nonsignificant. 
A) prior to the calculation of $F_{o b t}$ to determine if an ANOVA is necessary. 
B) after $F_{o b t}$ is found to be significant. 
C) when we plan on comparing only certain specified pairs of sample means with each other. 
D) after $F_{o b t}$ is found to be nonsignificant.

Question 6

Which of the following is one of the requirements for using a one-way, between-subjects ANOVA?

Accepted Answer

A) The means of the populations represented are homogeneous. 
B) The populations represented have significantly different variances. 
C) Each sample represents a normally distributed population of nominal or ordinal scores. 
D) The scores in each condition are independent samples. 
A) The means of the populations represented are homogeneous. 
B) The populations represented have significantly different variances. 
C) Each sample represents a normally distributed population of nominal or ordinal scores. 
D) The scores in each condition are independent samples.

Question 7

For Joan's doctoral dissertation experiment, 15 wheelchair users were assigned to three groups with 5 in each group.These participants navigated in virtual-reality settings.Group 1 participants were in the virtual-reality setting a building) as wheelchair users.Group 2 participants were in the virtual-reality setting in a wheelchair pushed by a walking person.Group 3 participants walked without aid in the virtual-reality setting.Joan measured the number the time needed to complete the navigation of the virtual-reality setting.
a.What is the dependent variable?
b.What is the independent variables?
c.How many levels are there?
d.What is the N?

Accepted Answer

a.The dependent variable is ti

Question 8

Professor Johnston conducted an experiment where subjects either drank 5, 3, or 0 cups of coffee and then measured their alertness.The first two conditions had 55 subjects but the control condition had 51 subjects.Professor Johnston obtained a significant ANOVA.Is he now justified in using a Tukey's HSD test?

Accepted Answer

If the subjects in all of the conditions

Question 9

Below is a partially completed ANOVA summary table.What would be the value of F-obtained? $\begin{array}{|l|l|l|l|l|}
\hline \text { Source } & \text { Sum of Squares } & d f & \text { Mean Square } & F \
\hline \text { Between } & 73.18 & 3 & & \
\hline \text { Within } & 82.04 & 15 & & \
\hline \text { Total } & & 18 & & \
\hline
\end{array}$

Accepted Answer

A) 4.46 
B) 5.47 
C) 24.39 
D) 155.22 
A) 4.46 
B) 5.47 
C) 24.39 
D) 155.22

Question 10

What is the mean of an F-distribution?

Accepted Answer

The answer of What is the mean of an F-distribution?...

Question 11

Corey is researching the effect of memory-enhancing, memory-impairing, and memory-neutral drugs on the ability of rats to run a maze.He has a total of 45 rats available for his study.He assigns an equal number of rats to each treatment condition.If he calculates his$\Sigma X_{t o t}^{2}$ = 60, $\left(\sum X_{t o t}\right)$= 40, and   $\sum\left(\frac{\left(\sum X \text { in column }\right)^{2}}{n \text { in column }}\right)$ = 45. 
a.What is N?
b.What is n?
c.What is $S S_{tot}$ ?
d.What is $S S_{bn}$ ?
e.What is $S S_{wn}$ ?

Accepted Answer

a.N = 45
b

Question 12

Analysis of variance is designed to compare  ________simultaneously.

Accepted Answer

A) all sample ranges 
B) all sample medians 
C) some sample means 
D) all sample means 
A) all sample ranges 
B) all sample medians 
C) some sample means 
D) all sample means

Question 13

To find eta squared, we must calculate

Accepted Answer

A) sum of squares between divided by sum of squares total. 
B) sum of squares between divided by sum of squares within. 
C) sum of squares within divided by sum of squares total. 
D) sum of squares within divided by mean square within. 
A) sum of squares between divided by sum of squares total. 
B) sum of squares between divided by sum of squares within. 
C) sum of squares within divided by sum of squares total. 
D) sum of squares within divided by mean square within.

Question 14

Dr.Thompson has completed an experiment where he noted subject reactions to either viewing a funny movie n =
45), a serious movie n = 42), or no movie at all n = 47).State the degrees of freedom between, within, and total.

Accepted Answer

Degrees of freedom between = k

Question 15

The  ________ is defined as the probability of making a Type I error when comparing all pairs of means in an experiment.

Accepted Answer

A) experiment-wise error rate 
B) effect size 
C) mean square 
D) alpha level 
A) experiment-wise error rate 
B) effect size 
C) mean square 
D) alpha level

Question 16

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

Accepted Answer

A) pairs of sample variances from different levels of a factor to determine which are significantly different from each other. 
B) pairs of sample means from different levels of a factor to determine which are significantly different from each other. 
C) variances to each other. 
D) pairs of sample means from different factors to determine whether they are significantly different from each other. 
A) pairs of sample variances from different levels of a factor to determine which are significantly different from each other. 
B) pairs of sample means from different levels of a factor to determine which are significantly different from each other. 
C) variances to each other. 
D) pairs of sample means from different factors to determine whether they are significantly different from each other.

Question 17

Research into the social behavior of senior citizens living in different settings has resulted in the following data.Within each residential setting type, 6 seniors were studied to see how many days each week they left their home. $\begin{array}{|l|l|l|}
\hline \text { Own Home } & \begin{array}{l}
\text { Retirement } \
\text { Community }
\end{array} & \begin{array}{l}
\text { Assisted-Living } \
\text { Apartment }
\end{array} \
\hline 2 & 3 & 6 \
\hline 5 & 3 & 6 \
\hline 1 & 4 & 5 \
\hline 0 & 5 & 6 \
\hline 1 & 3 & 5 \
\hline 3 & 5 & 4 \
\hline
\end{array}$ 
a.Complete the following source table: $\begin{array}{l|l|l|l|l}
\hline \text { Source } & \text { Sum of Square } & \text { df } & \text { Mean Square } & F \
\hline \text { Between groups } & & & & \
\hline \text { Within groups } & & & & \
\hline \text { Total } & & & & \
\hline
\end{array}$ 
b.Use $\alpha$ = .05.What is the $F_{c r i t}$ ? 
c.What should you conclude?

Accepted Answer

None

Question 18

The independent variable matches which of the following ANOVA terms?

Accepted Answer

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

Question 19

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.
a.What is$d f_{t o t al}$ ?
b.What is $d f_{b n}$ ?
c What is $d f_{wn}$ ?

Accepted Answer

a.@#LAT-DLM&= 35 
 b

Question 20

The experiment-wise error rate pertains to the probability of making a  ________error when comparing  ________of the means in an experiment.

Accepted Answer

A) Type I; all 
B) Type I; some 
C) Type II; all 
D) Type II; some 
A) Type I; all 
B) Type I; some 
C) Type II; all 
D) Type II; some

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

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

Suppose you're reading a result in a journal article that reports, F3, 13) = 4.19, p <.05.What do each of these values mean?

Post hoc comparisons are used

Which of the following is one of the requirements for using a one-way, between-subjects ANOVA?

Below is a partially completed ANOVA summary table.What would be the value of F-obtained? Source Sum of Squares df Mean Square F Between 73.18 3 Within 82.04 15 Total 18

What is the mean of an F-distribution?

Analysis of variance is designed to compare ________simultaneously.

To find eta squared, we must calculate

Dr.Thompson has completed an experiment where he noted subject reactions to either viewing a funny movie n = 45), a serious movie n = 42), or no movie at all n = 47).State the degrees of freedom between, within, and total.

The ________ is defined as the probability of making a Type I error when comparing all pairs of means in an experiment.

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

The independent variable matches which of the following ANOVA terms?

The experiment-wise error rate pertains to the probability of making a error when comparing of the means in an experiment.

Introduction to Statistics and Research

Creating and Using Frequency Distributions

Summarizing Scores With Measures of Central Tendency

Summarizing Scores With Measures of Variability

Describing Data With Z-Scores and the Normal Curve

Using Probability to Make Decisions About Data

Overview of Statistical Hypothesis Testing: the Z-Test

Hypothesis Testing Using the One-Sample T-Test

Hypothesis Testing Using the Two-Sample T-Test

Describing Relationships Using Correlation and Regression

Understanding the Two-Way Analysis of Variance

Chi Square and Nonparametric Procedures

Filters

Exam 11: Hypothesis Testing Using the One-Way Analysis of Variance

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

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

Suppose you're reading a result in a journal article that reports, F3, 13) = 4.19, p <.05.What do each of these values mean?

Post hoc comparisons are used

Which of the following is one of the requirements for using a one-way, between-subjects ANOVA?

Below is a partially completed ANOVA summary table.What would be the value of F-obtained? Source Sum of Squares df Mean Square F Between 73.18 3 Within 82.04 15 Total 18

What is the mean of an F-distribution?

Analysis of variance is designed to compare ________simultaneously.

To find eta squared, we must calculate

Dr.Thompson has completed an experiment where he noted subject reactions to either viewing a funny movie n = 45), a serious movie n = 42), or no movie at all n = 47).State the degrees of freedom between, within, and total.

The ________ is defined as the probability of making a Type I error when comparing all pairs of means in an experiment.

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

The independent variable matches which of the following ANOVA terms?

The experiment-wise error rate pertains to the probability of making a ________error when comparing ________of the means in an experiment.

Introduction to Statistics and Research

Creating and Using Frequency Distributions

Summarizing Scores With Measures of Central Tendency

Summarizing Scores With Measures of Variability

Describing Data With Z-Scores and the Normal Curve

Using Probability to Make Decisions About Data

Overview of Statistical Hypothesis Testing: the Z-Test

Hypothesis Testing Using the One-Sample T-Test

Hypothesis Testing Using the Two-Sample T-Test

Describing Relationships Using Correlation and Regression

Understanding the Two-Way Analysis of Variance

Chi Square and Nonparametric Procedures

Filters

The experiment-wise error rate pertains to the probability of making a error when comparing of the means in an experiment.