Question 1

The difference between the mean and an observed value is called the deviation from the mean.

Accepted Answer

A) True 
 B)False

Question 2

A frequency distribution helps ________.

Accepted Answer

A) determine how close a sample comes to the null hypothesis 
B) us to understand how one variable,X,relates to another variable,Y 
C) determine if a systematic association exists between two variables 
D) determine the shape of the empirical distribution of the variable 
A) determine how close a sample comes to the null hypothesis 
B) us to understand how one variable,X,relates to another variable,Y 
C) determine if a systematic association exists between two variables 
D) determine the shape of the empirical distribution of the variable

Question 3

A frequency distribution helps determine ________.

Accepted Answer

A) the extent of nonresponse 
B) the extent of illegitimate responses 
C) the presence of outliers or cases with extreme values 
D) all of the above 
A) the extent of nonresponse 
B) the extent of illegitimate responses 
C) the presence of outliers or cases with extreme values 
D) all of the above

Question 4

In the parametric case of means for two independent samples,the hypotheses take which form?

Accepted Answer

A) H0:μ1 = μ2 H1:μ1 ≠ μ2 
B) H0:σ12 = σ22 H1:σ12 ≠ σ22 
C) H0:μ ≤ 4.0 H1:μ > 4.0 
D) H0: π1 = π2 H1: π1 ≠ π2 
A) H0:μ1 = μ2 H1:μ1 ≠ μ2 
B) H0:σ12 = σ22 H1:σ12 ≠ σ22 
C) H0:μ ≤ 4.0 H1:μ > 4.0 
D) H0: π1 = π2 H1: π1 ≠ π2

Question 5

In cross-tabulation,the introduction of a third variable clarifies the initial association (or lack of it)observed between two variables and can result in six possibilities.

Accepted Answer

A) True 
 B)False

Question 6

The sign test is more powerful than the Wilcoxon matched-pairs signed-ranks test.

Accepted Answer

A) True 
 B)False

Question 7

Which statement is not correct about the null hypothesis?

Accepted Answer

A) It is always the hypothesis tested. 
B) Accepting the null hypothesis will lead to some changes in opinions or action. 
C) It can never be accepted based on a single statistical test. 
D) In marketing research,the null hypothesis is formulated in such a way that rejection leads to the acceptance of the desired conclusion. 
A) It is always the hypothesis tested. 
B) Accepting the null hypothesis will lead to some changes in opinions or action. 
C) It can never be accepted based on a single statistical test. 
D) In marketing research,the null hypothesis is formulated in such a way that rejection leads to the acceptance of the desired conclusion.

Question 8

Type I error occurs when the sample results lead to the rejection of the null hypothesis when it is in fact true.

Accepted Answer

A) True 
 B)False

Question 9

The critical value of the F distribution depends upon two sets of degrees of freedom: those in the numerator and those in the denominator.

Accepted Answer

A) True 
 B)False

Question 10

The most commonly used statistics associated with frequencies are measures of location,measures of variability,and measures of occasion.

Accepted Answer

A) True 
 B)False

Question 11

The two-sample median test examines whether the two distributions are the same.

Accepted Answer

A) True 
 B)False

Question 12

Discuss the relationship between Type I error and Type II error and the power of a test.

Accepted Answer

Type I error occurs when the sample resu

Question 13

Mean,median,and mode are measures of variability.

Accepted Answer

A) True 
 B)False

Question 14

In commercial marketing research,the one-tailed test is used more often than a two-tailed test.

Accepted Answer

A) True 
 B)False

Question 15

________ is a measure of the relative peakedness or flatness of the curve defined by the frequency distribution.

Accepted Answer

A) Kurtosis 
B) Type I error 
C) Skewness 
D) Type II error 
A) Kurtosis 
B) Type I error 
C) Skewness 
D) Type II error

Question 16

The test statistic used in the Wilcoxon matched-pairs signed-ranks test is ________.

Accepted Answer

A) t 
B) chi-square 
C) alpha 
D) z 
A) t 
B) chi-square 
C) alpha 
D) z

Question 17

In tests of differences,the null hypothesis is that there is a difference (H0:.....is different than.... ).

Accepted Answer

A) True 
 B)False

Question 18

The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known (or assumed to be known)and the population variance is estimated from the sample.

Accepted Answer

A) statistic 
B) t statistic 
C) z statistic 
D) none of the above 
A) statistic 
B) t statistic 
C) z statistic 
D) none of the above

Question 19

The alternative hypothesis is a statement that some difference or effect is expected.

Accepted Answer

A) True 
 B)False

Question 20

Cross-tabulation examines associations between variables,not causation.

Accepted Answer

A) True 
 B)False

Exam 15: Frequency Distribution,cross-Tabulation,and Hypothesis Testing

The difference between the mean and an observed value is called the deviation from the mean.

A frequency distribution helps ________.

A frequency distribution helps determine ________.

In the parametric case of means for two independent samples,the hypotheses take which form?

In cross-tabulation,the introduction of a third variable clarifies the initial association (or lack of it)observed between two variables and can result in six possibilities.

The sign test is more powerful than the Wilcoxon matched-pairs signed-ranks test.

Which statement is not correct about the null hypothesis?

Type I error occurs when the sample results lead to the rejection of the null hypothesis when it is in fact true.

The critical value of the F distribution depends upon two sets of degrees of freedom: those in the numerator and those in the denominator.

The most commonly used statistics associated with frequencies are measures of location,measures of variability,and measures of occasion.

The two-sample median test examines whether the two distributions are the same.

Discuss the relationship between Type I error and Type II error and the power of a test.

Mean,median,and mode are measures of variability.

In commercial marketing research,the one-tailed test is used more often than a two-tailed test.

________ is a measure of the relative peakedness or flatness of the curve defined by the frequency distribution.

The test statistic used in the Wilcoxon matched-pairs signed-ranks test is ________.

In tests of differences,the null hypothesis is that there is a difference (H0:.....is different than.... ).

The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known (or assumed to be known)and the population variance is estimated from the sample.

The alternative hypothesis is a statement that some difference or effect is expected.

Cross-tabulation examines associations between variables,not causation.

Introduction to Marketing Research

Defining the Marketing Research Problem and Developing an Approach

Research Design

Exploratory Research Design: Secondary Data

Exploratory Research Design: Qualitative Research

Descriptive Research Design: Survey and Observation

Causal Research Design: Experimentation

Measurement and Scaling: Fundamentals and Comparative Scaling

Measurement and Scaling: Noncomparative Scaling Techniques

Questionnaire and Form Design

Sampling: Design and Procedures

Sampling: Final and Initial Sample Size Determination

Fieldwork

Data Preparation

Analysis of Variance and Covariance

Correlation and Regression

Discriminant and Logit Analysis

Factor Analysis

Cluster Analysis

Multidimensional Scaling and Conjoint Analysis

Structural Equation Modeling and Path Analysis

Report Preparation and Presentation

Filters

In tests of differences,the null hypothesis is that there is a difference (H₀:.....is different than.... ).