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

In the ANOVA test, the symbol 'dfw' refers to________.

Accepted Answer

A)  the mean square estimate within. 
B)  degrees of freedom associated with SSW. 
C)  degrees forward without. 
D)  degrees of fullness, within estimate. 
A)  the mean square estimate within. 
B)  degrees of freedom associated with SSW. 
C)  degrees forward without. 
D)  degrees of fullness, within estimate.

Question 3

A useful computational shortcut for the ANOVA test is expressed as________.

Accepted Answer

A)  SST = SSB/SSW 
B)  dfw = dfb + SST 
C)  SSW = SST - SSB 
D)  SSB = SSW - SST 
A)  SST = SSB/SSW 
B)  dfw = dfb + SST 
C)  SSW = SST - SSB 
D)  SSB = SSW - SST

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 sample 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.

Accepted Answer

The answer of Three different sections of the same Interstate...

Question 5

In the ANOVA test, if the null hypothesis is true________.

Accepted Answer

A)  the sample standard deviations should be zero. 
B)  the sample means should be roughly equal in value. 
C)  the population means should be very different from each other. 
D)  alpha should be less than zero. 
A)  the sample standard deviations should be zero. 
B)  the sample means should be roughly equal in value. 
C)  the population means should be very different from each other. 
D)  alpha should be less than zero.

Question 6

Stated generally, the null hypothesis for the ANOVA test is________.

Accepted Answer

A)  μ 1 = μ 2 = μ 3 = ... = μ k 
B)  σ 1 = σ 2 = σ 3 = ... = σ k 
C)  SST = SSB = SSW 
D)  dfb = dfw 
A)  μ 1 = μ 2 = μ 3 = ... = μ k 
B)  σ 1 = σ 2 = σ 3 = ... = σ k 
C)  SST = SSB = SSW 
D)  dfb = dfw

Question 7

Analysis of Variance based upon the effect of a single variable upon another is a________.

Accepted Answer

A)  Two-way ANOVA. 
B)  One-way ANOVA. 
C)  Multiple ANOVA. 
D)  None of these choices are correct. 
A)  Two-way ANOVA. 
B)  One-way ANOVA. 
C)  Multiple ANOVA. 
D)  None of these choices are correct.

Question 8

The degrees of freedom for the Sum of Squares Within (SSW) is based upon the________.

Accepted Answer

A)  total number of cases. 
B)  difference between total number of cases and categories. 
C)  total number of categories. 
D)  sum of the total number of cases and categories. 
A)  total number of cases. 
B)  difference between total number of cases and categories. 
C)  total number of categories. 
D)  sum of the total number of cases and categories.

Question 9

In an ANOVA test, when the null hypothesis is rejected, we know that at least one of the means is significantly different from the others. In order to find out which mean(s) are significantly different, we must conduct a________.

Accepted Answer

A)  t test. 
B)  post hoc test. 
C)  post mortem test. 
D)  chi square test. 
A)  t test. 
B)  post hoc test. 
C)  post mortem test. 
D)  chi square test.

Question 10

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 11

The quantity SSW measures the amount of variation________.

Accepted Answer

A)  after subtracting the total variation (SST). 
B)  within the categories. 
C)  in the population. 
D)  assuming the null hypothesis is true. 
A)  after subtracting the total variation (SST). 
B)  within the categories. 
C)  in the population. 
D)  assuming the null hypothesis is true.

Question 12

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 13

When we have an interval-ratio dependent variable and are comparing two groups, the appropriate test of significance is the ________. When we have an interval-ratio dependent variable and are comparing three or more groups, the appropriate test of significance is the ________.

Accepted Answer

A)  t test, ANOVA 
B)  ANOVA, t test 
C)  chi square, ANOVA 
D)  t test, chi square 
A)  t test, ANOVA 
B)  ANOVA, t test 
C)  chi square, ANOVA 
D)  t test, chi square

Question 14

A researcher is analyzing regional differences in family size. She has information on number of children for samples of families from four regions. Which of the following would be an appropriate statistical test?

Accepted Answer

A)  t test for matched samples 
B)  t test for difference in means 
C)  ANOVA 
D)  Actually, none of the answer choices would work in this situation 
A)  t test for matched samples 
B)  t test for difference in means 
C)  ANOVA 
D)  Actually, none of the answer choices would work in this situation

Question 15

The degrees of freedom for the Sum of Squares Between (SSB) is based upon the________.

Accepted Answer

A)  total number of categories. 
B)  total number of cases. 
C)  difference between total number of cases and categories. 
D)  sum of the total number of cases and categories. 
A)  total number of categories. 
B)  total number of cases. 
C)  difference between total number of cases and categories. 
D)  sum of the total number of cases and categories.

Question 16

For ANOVA, we construct two estimates of the population variance. These are called________.

Accepted Answer

A)  the average estimates. 
B)  the standard estimates. 
C)  the within and total estimates. 
D)  the mean square estimates. 
A)  the average estimates. 
B)  the standard estimates. 
C)  the within and total estimates. 
D)  the mean square estimates.

Question 17

One limitation of ANOVA is that, when the null hypothesis is rejected, the test________.

Accepted Answer

A)  does not tell us which sample mean(s) is/are different. 
B)  tells us nothing about the standard deviations. 
C)  does not tell us which population variances are zero. 
D)  does not tell us which population variances are greater than zero. 
A)  does not tell us which sample mean(s) is/are different. 
B)  tells us nothing about the standard deviations. 
C)  does not tell us which population variances are zero. 
D)  does not tell us which population variances are greater than zero.

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

In the ANOVA test, the symbol 'dfw' refers to________.

A useful computational shortcut for the ANOVA test is expressed as________.

In the ANOVA test, if the null hypothesis is true________.

Stated generally, the null hypothesis for the ANOVA test is________.

Analysis of Variance based upon the effect of a single variable upon another is a________.

The degrees of freedom for the Sum of Squares Within (SSW) is based upon the________.

In an ANOVA test, when the null hypothesis is rejected, we know that at least one of the means is significantly different from the others. In order to find out which mean(s) are significantly different, we must conduct a________.

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

The quantity SSW measures the amount of variation________.

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

When we have an interval-ratio dependent variable and are comparing two groups, the appropriate test of significance is the . When we have an interval-ratio dependent variable and are comparing three or more groups, the appropriate test of significance is the .

A researcher is analyzing regional differences in family size. She has information on number of children for samples of families from four regions. Which of the following would be an appropriate statistical test?

The degrees of freedom for the Sum of Squares Between (SSB) is based upon the________.

For ANOVA, we construct two estimates of the population variance. These are called________.

One limitation of ANOVA is that, when the null hypothesis is rejected, the test________.

Introduction

Basic Descriptive Statistics Tables Percentages Rates and Ratios and Graphs

Measures of Central Tendency

Measures of Variation

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 for Nominal and Ordinal Level Variables

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).

In the ANOVA test, the symbol 'dfw' refers to________.

A useful computational shortcut for the ANOVA test is expressed as________.

In the ANOVA test, if the null hypothesis is true________.

Stated generally, the null hypothesis for the ANOVA test is________.

Analysis of Variance based upon the effect of a single variable upon another is a________.

The degrees of freedom for the Sum of Squares Within (SSW) is based upon the________.

In an ANOVA test, when the null hypothesis is rejected, we know that at least one of the means is significantly different from the others. In order to find out which mean(s) are significantly different, we must conduct a________.

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

The quantity SSW measures the amount of variation________.

ANOVA may be thought of as an extension of the ______________.________.

When we have an interval-ratio dependent variable and are comparing two groups, the appropriate test of significance is the ________. When we have an interval-ratio dependent variable and are comparing three or more groups, the appropriate test of significance is the ________.

A researcher is analyzing regional differences in family size. She has information on number of children for samples of families from four regions. Which of the following would be an appropriate statistical test?

The degrees of freedom for the Sum of Squares Between (SSB) is based upon the________.

For ANOVA, we construct two estimates of the population variance. These are called________.

One limitation of ANOVA is that, when the null hypothesis is rejected, the test________.

Introduction

Basic Descriptive Statistics Tables Percentages Rates and Ratios and Graphs

Measures of Central Tendency

Measures of Variation

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 for Nominal and Ordinal Level Variables

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 .

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

When we have an interval-ratio dependent variable and are comparing two groups, the appropriate test of significance is the . When we have an interval-ratio dependent variable and are comparing three or more groups, the appropriate test of significance is the .