Question 1

In comparing the difference of the means between two groups,the null hypothesis can also be stated as:

Accepted Answer

A)  $ \mu_{1}-\mu_{2}=0 $ 
B)  $ \mu_{1}+\mu_{2}=0 $ 
C)  $ \mu_{1} \mathrm{x} \mu_{2}=0 $ 
D)  $ \mu_{1} / \mu_{2}=0 $ 
A)  $ \mu_{1}-\mu_{2}=0 $ 
B)  $ \mu_{1}+\mu_{2}=0 $ 
C)  $ \mu_{1} \mathrm{x} \mu_{2}=0 $ 
D)  $ \mu_{1} / \mu_{2}=0 $

Question 2

A pooled estimate of the standard error is a poorer estimate of the standard error than one based on the variance from either sample.

Accepted Answer

A) True 
 B)False

Question 3

In practice,t-test results are commonly calculated by hand because they are so simple.

Accepted Answer

A) True 
 B)False

Question 4

When two variables are studied simultaneously in a research study,this is called ____________________ statistical analysis.

Accepted Answer

The answer of When two variables are studied simultaneously in...

Question 5

In using the t-test to compare the means of two groups,the alternative hypothesis is typically stated as:

Accepted Answer

A)  $ \mu_{1 \neq \mu_{2}} $ 
B)  $ \mu_{1}=\mu_{2} $ 
C)  $ \mu_{1}-\mu_{2}=2 $ 
D)  $ \mu_{1}+\mu_{2}=1 $ 
A)  $ \mu_{1 \neq \mu_{2}} $ 
B)  $ \mu_{1}=\mu_{2} $ 
C)  $ \mu_{1}-\mu_{2}=2 $ 
D)  $ \mu_{1}+\mu_{2}=1 $

Question 6

The chi-square test tests the significance of the data in an R X C contingency table in which R stands for row and C stands for column.

Accepted Answer

A) True 
 B)False

Question 7

The t-test assumes that the two population variances are equal.

Accepted Answer

A) True 
 B)False

Question 8

The sum of the differences between observed values and the group mean for a given set of observations is known as the:

Accepted Answer

A) within-group error 
B) between-groups variance 
C) F-ratio 
D) γ statistic 
A) within-group error 
B) between-groups variance 
C) F-ratio 
D) γ statistic

Question 9

Suppose that you wanted to determine if the males in your sales force differed from the females in your sales force in the proportion of sales that they made to mass merchandiser chains.Your data show that the 80 males had 40% of their sales to these chains,while the 60 females had 25% of their sales to these chains.For these data,the standard error of the difference in proportions is approximately:

Accepted Answer

A) 0.08 
B) 0.15 
C) 0.02 
D) 1.67 
A) 0.08 
B) 0.15 
C) 0.02 
D) 1.67

Question 10

The formula given below represents the method for calculating the:

Accepted Answer

A) Z-test 
B) F-test 
C) χ² test 
D) α 
A) Z-test 
B) F-test 
C) χ² test 
D) α

Question 11

The independent samples t-test tests the differences between means taken from two independent samples or groups.

Accepted Answer

A) True 
 B)False

Question 12

The formula for the chi-square test uses:

Accepted Answer

A) observed and expected frequencies 
B) observed and expected percentages 
C) the two sample means 
D) the two sample standard deviations 
A) observed and expected frequencies 
B) observed and expected percentages 
C) the two sample means 
D) the two sample standard deviations

Question 13

To use the chi-square test,both variables in a 2 x 2 contingency table must be measured on a ratio scale.

Accepted Answer

A) True 
 B)False

Question 14

List the practical steps for interpreting t-test results.

Accepted Answer

The basic steps for interpreting t-test

Question 15

The ____________________ is the mean of a variable over all observations.

Accepted Answer

The answer of The ____________________ is the mean of a...

Question 16

The statistical test that is used to compare the sample variance with another sample variance is the ____________________.

Accepted Answer

A) True 
 B)False

Question 17

The chi-square test requires the researcher to compare the observed frequencies of the groups with the expected frequencies of the groups.

Accepted Answer

A) True 
 B)False

Question 18

The total mean is the mean of a variable over all observations.

Accepted Answer

A) True 
 B)False

Question 19

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable,a(n)____________________ test is appropriate.

Accepted Answer

A) True 
 B)False

Question 20

A redundant-sample t-test is an appropriate test for comparing the scores of two interval drawn from related populations.

Accepted Answer

A) True 
 B)False

Exam 22: Bivariate Statistical Analysis: Differences Between Two Variables

In comparing the difference of the means between two groups,the null hypothesis can also be stated as:

A pooled estimate of the standard error is a poorer estimate of the standard error than one based on the variance from either sample.

In practice,t-test results are commonly calculated by hand because they are so simple.

When two variables are studied simultaneously in a research study,this is called ____________________ statistical analysis.

In using the t-test to compare the means of two groups,the alternative hypothesis is typically stated as:

The chi-square test tests the significance of the data in an R X C contingency table in which R stands for row and C stands for column.

The t-test assumes that the two population variances are equal.

The sum of the differences between observed values and the group mean for a given set of observations is known as the:

The formula given below represents the method for calculating the:

The independent samples t-test tests the differences between means taken from two independent samples or groups.

The formula for the chi-square test uses:

To use the chi-square test,both variables in a 2 x 2 contingency table must be measured on a ratio scale.

List the practical steps for interpreting t-test results.

The ____________________ is the mean of a variable over all observations.

The statistical test that is used to compare the sample variance with another sample variance is the ____________________.

The chi-square test requires the researcher to compare the observed frequencies of the groups with the expected frequencies of the groups.

The total mean is the mean of a variable over all observations.

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable,a(n)____________________ test is appropriate.

A redundant-sample t-test is an appropriate test for comparing the scores of two interval drawn from related populations.

The Role of Marketing Research

Information Systems and Knowledge Management

The Marketing Research Process

The Human Side of Marketing Research: Organizational and Ethical Issues

Problem Definition: Jump-Starting the Research Process

Qualitative Research Tools

Secondary Data Research in a Digital Age

Survey Research: an Overview

Survey Research: Basic Methods of Communication With Respondents

Observation

Experimental Research: An Overview

Test Markets and Experimental Design

Measurement

Attitude Measurement

Questionnaire Design

Sampling Designs and Sampling Procedures

Determination of Sample Size: A Review of Statistical Theory

Fieldwork

Editing and Coding: Transforming Raw Data Into Information

Basic Data Analysis: Descriptive Statistics

Univariate Statistical Analysis

Bivariate Statistical Analysis: Measures of Association

Introducing Multivariate Statistical Analysis

Communicating Research Results: Research Report, oral Presentation, and Research Follow-Up

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