Question 1

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 C

Question 2

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 A

Question 3

We have rejected the null hypothesis in an ANOVA test.This means that the variation ____ the samples is significantly greater than the variation ____ the samples.

Accepted Answer

A) within;between 
B) above;below 
C) outside;inside 
D) between;within 
A) within;between 
B) above;below 
C) outside;inside 
D) between;within D

Question 4

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 5

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 6

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 7

In a test using ANOVA,the average ages of three different samples are 37.56,37.57,37.58.This pattern would be consistent with the assumption that the

Accepted Answer

A) null hypothesis is false. 
B) null hypothesis is true. 
C) research hypothesis is false. 
D) sample standard deviations approach zero. 
A) null hypothesis is false. 
B) null hypothesis is true. 
C) research hypothesis is false. 
D) sample standard deviations approach zero.

Question 8

To construct estimates of the population variance,we divide each sum of squares by its respective

Accepted Answer

A) degrees of freedom. 
B) N. 
C) category mean. 
D) standard deviation. 
A) degrees of freedom. 
B) N. 
C) category mean. 
D) standard deviation.

Question 9

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 10

In the ANOVA test,if the null hypothesis is true,then

Accepted Answer

A) SSB should be at least twice as much as dfb. 
B) SSW should be much greater than SSB. 
C) the combined dfb and dfw should be much greater than the SST. 
D) the mean square between (MS
B) and the mean square within (MSW)should be roughly equal in value. 
A) SSB should be at least twice as much as dfb. 
B) SSW should be much greater than SSB. 
C) the combined dfb and dfw should be much greater than the SST. 
D) the mean square between (MS
B) and the mean square within (MSW)should be roughly equal in value.

Question 11

If we reject the null hypothesis in a test using analysis of variance,we are concluding that

Accepted Answer

A) the populations from which our samples come are different. 
B) the variables are independent. 
C) the population variances are the same. 
D) the sample means are significantly different. 
A) the populations from which our samples come are different. 
B) the variables are independent. 
C) the population variances are the same. 
D) the sample means are significantly different.

Question 12

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 13

The population variance is a measure of

Accepted Answer

A) central tendency. 
B) dispersion. 
C) location. 
D) degrees of freedom. 
A) central tendency. 
B) dispersion. 
C) location. 
D) degrees of freedom.

Question 14

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 15

The ANOVA test is most appropriate for dependent variables that are

Accepted Answer

A) discrete and ordinal. 
B) discrete and continuous. 
C) continuous and nominal. 
D) continuous and interval-ratio. 
A) discrete and ordinal. 
B) discrete and continuous. 
C) continuous and nominal. 
D) continuous and interval-ratio.

Question 16

Stated generally,the null hypothesis for the ANOVA test is

Accepted Answer

A) m1 = m2 = m3 = ...= mk 
B) s1 = s2 = s3 = ...= sk 
C) SST = SSB = SSW 
D) dfb = dfw 
A) m1 = m2 = m3 = ...= mk 
B) s1 = s2 = s3 = ...= sk 
C) SST = SSB = SSW 
D) dfb = dfw

Question 17

In the ANOVA test,what assumption must be made about the shape of the population distribution?

Accepted Answer

A) the population distribution is normal in shape 
B) the test is non-parametric,no assumption need be made about the population 
C) population distribution is a bivariate table 
D) the test is parametric,population distribution is assumed to not be normal 
A) the population distribution is normal in shape 
B) the test is non-parametric,no assumption need be made about the population 
C) population distribution is a bivariate table 
D) the test is parametric,population distribution is assumed to not be normal

Question 18

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 19

ANOVA is a one-tailed test and we are concerned only with those outcomes in which there is more variance

Accepted Answer

A) within categories than between categories. 
B) between categories than within categories. 
C) within populations than samples. 
D) within samples than populations. 
A) within categories than between categories. 
B) between categories than within categories. 
C) within populations than samples. 
D) within samples than populations.

Question 20

What would be the most appropriate test of significance for research situations in which we have an interval-ratio dependent variable and an independent variable with three categories?

Accepted Answer

A) the t test 
B) Chi square 
C) ANOVA 
D) the IQV 
A) the t test 
B) Chi square 
C) ANOVA 
D) the IQV

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

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

We have rejected the null hypothesis in an ANOVA test.This means that the variation the samples is significantly greater than the variation the samples.

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 useful computational shortcut for the ANOVA test is expressed as

The quantity SSW measures the amount of variation

In a test using ANOVA,the average ages of three different samples are 37.56,37.57,37.58.This pattern would be consistent with the assumption that the

To construct estimates of the population variance,we divide each sum of squares by its respective

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

In the ANOVA test,if the null hypothesis is true,then

If we reject the null hypothesis in a test using analysis of variance,we are concluding that

In the ANOVA test,if the null hypothesis is true

The population variance is a measure of

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

The ANOVA test is most appropriate for dependent variables that are

Stated generally,the null hypothesis for the ANOVA test is

In the ANOVA test,what assumption must be made about the shape of the population distribution?

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

ANOVA is a one-tailed test and we are concerned only with those outcomes in which there is more variance

What would be the most appropriate test of significance for research situations in which we have an interval-ratio dependent variable and an independent variable with three categories?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing Iv: Chi Square

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 10: Hypothesis Testing III: the Analysis of Variance

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

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

We have rejected the null hypothesis in an ANOVA test.This means that the variation ____ the samples is significantly greater than the variation ____ the samples.

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 useful computational shortcut for the ANOVA test is expressed as

The quantity SSW measures the amount of variation

In a test using ANOVA,the average ages of three different samples are 37.56,37.57,37.58.This pattern would be consistent with the assumption that the

To construct estimates of the population variance,we divide each sum of squares by its respective

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

In the ANOVA test,if the null hypothesis is true,then

If we reject the null hypothesis in a test using analysis of variance,we are concluding that

In the ANOVA test,if the null hypothesis is true

The population variance is a measure of

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

The ANOVA test is most appropriate for dependent variables that are

Stated generally,the null hypothesis for the ANOVA test is

In the ANOVA test,what assumption must be made about the shape of the population distribution?

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

ANOVA is a one-tailed test and we are concerned only with those outcomes in which there is more variance

What would be the most appropriate test of significance for research situations in which we have an interval-ratio dependent variable and an independent variable with three categories?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing Iv: Chi Square

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

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 .

We have rejected the null hypothesis in an ANOVA test.This means that the variation the samples is significantly greater than the variation the samples.

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 .