Question 1

In the ANOVA test,degrees of freedom within (dfw)are equal to ____ and degrees of freedom between (dfb)are equal to (k - 1).

Accepted Answer

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

Question 2

If our F (obtained)exceeds the F (critical),we

Accepted Answer

A) reject the null. 
B) accept the null. 
C) must recompute since this is mathematically impossible. 
D) reject the research hypothesis. 
A) reject the null. 
B) accept the null. 
C) must recompute since this is mathematically impossible. 
D) reject the research hypothesis.

Question 3

The null hypothesis for ANOVA states that

Accepted Answer

A) the variables are independent. 
B) the variables are related. 
C) the population means are equal. 
D) the population means are different. 
A) the variables are independent. 
B) the variables are related. 
C) the population means are equal. 
D) the population means are different.

Question 4

Three different sections of the same Interstate highway,with roughly equal traffic volumes,have been patrolled by the State Police at different levels of intensity for the past six months.The posted speed limit is 55 and the speeds of a random samples of motorists have been registered for each of the three sections.Is there any statistically significant difference in the speeds? Use the five step model as a guide and write a sentence or two of interpretation for your results.
 $\begin{array}{|l|l|l|}
\hline \text { Lightly } & \text { Moderately } & \text { Heavily } \
\hline \text { Patrolled } & \text { Patrolled } & \text { Patrolled } \
\hline 55 & 57 & 50 \
\hline 48 & 58 & 51 \
\hline 58 & 58 & 60 \
\hline 65 & 55 & 58 \
\hline 72 & 55 & 55 \
\hline 67 & 59 & 52 \
\hline 54 & 58 & 55 \
\hline 65 & 54 & 53 \
\hline
\end{array}$

Accepted Answer

SST = 715.

Question 5

Which of the following correctly states the relationship between SST (the total sum of squares),SSB (the sum of squares between),and SSW (the sum of squares within)?

Accepted Answer

A) SST = SSB + SSW 
B) SST = SSB - SSW 
C) SSW = SSB + SST 
D) SSB = SST - SSW 
A) SST = SSB + SSW 
B) SST = SSB - SSW 
C) SSW = SSB + SST 
D) SSB = SST - SSW

Question 6

Which of the following is an assumption that must be made in Step 1 of the ANOVA test?

Accepted Answer

A) independent random samples 
B) dependent random samples 
C) level of measurement is nominal 
D) stratified random samples 
A) independent random samples 
B) dependent random samples 
C) level of measurement is nominal 
D) stratified random samples

Question 7

In the ANOVA test,the symbol 'dfb' refers to

Accepted Answer

A) the mean square estimate between. 
B) degrees of freedom associated with SSB. 
C) degrees forward beneath. 
D) degrees of fullness,behind estimate. 
A) the mean square estimate between. 
B) degrees of freedom associated with SSB. 
C) degrees forward beneath. 
D) degrees of fullness,behind estimate.

Question 8

A null hypothesis that states "the population means are equal" would be appropriate for which of the following tests of significance?

Accepted Answer

A) chi square 
B) tests of proportions 
C) ANOVA 
D) Fisher's Exact test 
A) chi square 
B) tests of proportions 
C) ANOVA 
D) Fisher's Exact test

Question 9

ANOVA may be thought of as an extension of the ____.

Accepted Answer

A) confidence interval estimation procedure 
B) t test for the significance of the difference between two sample proportions 
C) t test for the significance of the difference between two sample means 
D) t test for the significance of the difference between two matched samples 
A) confidence interval estimation procedure 
B) t test for the significance of the difference between two sample proportions 
C) t test for the significance of the difference between two sample means 
D) t test for the significance of the difference between two matched samples

Question 10

According to the tests reported in the text,which of the following is true?

Accepted Answer

A) divorced individuals had significantly higher rates of sexual activity than any other group 
B) widowed individuals were not significantly different from the other groups in their rate of sexual activity 
C) married individuals had a significantly higher frequency of sex than any other group 
D) single individuals reported significantly lower number of different sexual partners over the past five years 
A) divorced individuals had significantly higher rates of sexual activity than any other group 
B) widowed individuals were not significantly different from the other groups in their rate of sexual activity 
C) married individuals had a significantly higher frequency of sex than any other group 
D) single individuals reported significantly lower number of different sexual partners over the past five years

Question 11

The research hypothesis for the ANOVA test is

Accepted Answer

A) m1 2 3 N. 
B) at least one population mean is different. 
C) SST = SSB = SSW. 
D) at least one of the sums of squares is different. 
A) m1 2 3 N. 
B) at least one population mean is different. 
C) SST = SSB = SSW. 
D) at least one of the sums of squares is different.

Question 12

The ANOVA test uses means and standard deviations to compare the amount of variation ____ with the amount of variation ____.

Accepted Answer

A) within categories,between categories 
B) above categories,below categories 
C) within sample means,between sample means 
D) within sample standard deviations,between sample standard deviations 
A) within categories,between categories 
B) above categories,below categories 
C) within sample means,between sample means 
D) within sample standard deviations,between sample standard deviations

Question 13

A researcher is comparing random samples of white,black,and Hispanic Americans for differences in income,family size,and years of education.Which of the following tests of significance would be useful for all three dependent variables?

Accepted Answer

A) t test for small samples 
B) t test for difference in means 
C) ANOVA 
D) the test for the significance of the difference between sample proportions 
A) t test for small samples 
B) t test for difference in means 
C) ANOVA 
D) the test for the significance of the difference between sample proportions

In the ANOVA test,degrees of freedom within (dfw)are equal to ____ and degrees of freedom between (dfb)are equal to (k - 1).

If our F (obtained)exceeds the F (critical),we

The null hypothesis for ANOVA states that

Which of the following correctly states the relationship between SST (the total sum of squares),SSB (the sum of squares between),and SSW (the sum of squares within)?

Which of the following is an assumption that must be made in Step 1 of the ANOVA test?

In the ANOVA test,the symbol 'dfb' refers to

A null hypothesis that states "the population means are equal" would be appropriate for which of the following tests of significance?

ANOVA may be thought of as an extension of the ____.

According to the tests reported in the text,which of the following is true?

The research hypothesis for the ANOVA test is

The ANOVA test uses means and standard deviations to compare the amount of variation with the amount of variation .

A researcher is comparing random samples of white,black,and Hispanic Americans for differences in income,family size,and years of education.Which of the following tests of significance would be useful for all three dependent variables?

Introduction

Basic Descriptive Statistics: Percentages, Ratios and Rates, Tables, Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing Iv: Chi Square

Bivariate Association: Introduction and Basic Concepts

Association Between Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 10: Hypothesis Testing III: the Analysis of Variance

In the ANOVA test,degrees of freedom within (dfw)are equal to ____ and degrees of freedom between (dfb)are equal to (k - 1).

If our F (obtained)exceeds the F (critical),we

The null hypothesis for ANOVA states that

Which of the following correctly states the relationship between SST (the total sum of squares),SSB (the sum of squares between),and SSW (the sum of squares within)?

Which of the following is an assumption that must be made in Step 1 of the ANOVA test?

In the ANOVA test,the symbol 'dfb' refers to

A null hypothesis that states "the population means are equal" would be appropriate for which of the following tests of significance?

ANOVA may be thought of as an extension of the ____.

According to the tests reported in the text,which of the following is true?

The research hypothesis for the ANOVA test is

The ANOVA test uses means and standard deviations to compare the amount of variation ____ with the amount of variation ____.

A researcher is comparing random samples of white,black,and Hispanic Americans for differences in income,family size,and years of education.Which of the following tests of significance would be useful for all three dependent variables?

Introduction

Basic Descriptive Statistics: Percentages, Ratios and Rates, Tables, Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing Iv: Chi Square

Bivariate Association: Introduction and Basic Concepts

Association Between Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters

The ANOVA test uses means and standard deviations to compare the amount of variation with the amount of variation .