Question 1

In cross-tabs,the introduction of a third variable can ________.

Accepted Answer

A)  refine the association observed between the two original variables 
B)  indicate no change in the initial association 
C)  indicate no association between the two variables,although an association was initially observed 
D)  All of the above are correct. 
A)  refine the association observed between the two original variables 
B)  indicate no change in the initial association 
C)  indicate no association between the two variables,although an association was initially observed 
D)  All of the above are correct.

Question 2

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 3

A statistic that describes a location within a data set is a ________.

Accepted Answer

A)  measure of location 
B)  measure of shapes 
C)  measure of variability 
D)  measure of occasion 
A)  measure of location 
B)  measure of shapes 
C)  measure of variability 
D)  measure of occasion

Question 4

The ________ can be used to assess the strength of association in a table of any size.

Accepted Answer

A)  coefficient of variation 
B)  contingency coefficient 
C)  phi coefficient 
D)  chi-square coefficient 
A)  coefficient of variation 
B)  contingency coefficient 
C)  phi coefficient 
D)  chi-square coefficient

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

The degrees of freedom for the t statistic to test hypotheses about one mean are ________.

Accepted Answer

A)  n - 1 
B)  n 
C)  n1 +n2 - 2 
D)  n1 + n2 
A)  n - 1 
B)  n 
C)  n1 +n2 - 2 
D)  n1 + n2

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

The ________ is a skewed distribution whose shape depends solely on the number of degrees of freedom.As the number of degrees of freedom increases,the distribution becomes more symmetrical.

Accepted Answer

A)  F distribution 
B)  chi-square distribution 
C)  t distribution 
D)  frequency distribution 
A)  F distribution 
B)  chi-square distribution 
C)  t distribution 
D)  frequency distribution

Question 9

If a variable is measured on a nominal scale,the median should be used.

Accepted Answer

A) True 
 B)False

Question 10

The Range = XLargest - XSmallest.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following statements is not true about parametric tests?

Accepted Answer

A)  The t statistic assumes that the variable is normally distributed and the mean is known (or assumed to be known)and the population variance is estimated from the sample. 
B)  The t test is a commonly used parametric test. 
C)  Parametric tests are used when the independent variables are non-metric. 
D)  B and C are not correct. 
A)  The t statistic assumes that the variable is normally distributed and the mean is known (or assumed to be known)and the population variance is estimated from the sample. 
B)  The t test is a commonly used parametric test. 
C)  Parametric tests are used when the independent variables are non-metric. 
D)  B and C are not correct.

Question 12

A one-sample nonparametric goodness-of-fit test to determine whether the observations for a particular variable could reasonably have come from a particular distribution is the ________.

Accepted Answer

A)  runs test 
B)  Kolmogorov-Smirnov one-sample test 
C)  binomial test 
D)  Mann-Whitney U test 
A)  runs test 
B)  Kolmogorov-Smirnov one-sample test 
C)  binomial test 
D)  Mann-Whitney U test

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

The null hypothesis,H0,when using the chi-square statistic,is that there is no association between the variables.

Accepted Answer

A) True 
 B)False

Question 15

A frequency distribution helps ________.

Accepted Answer

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

Question 16

The two-sample median test is not as powerful as the Mann-Whitney U test.

Accepted Answer

A) True 
 B)False

Question 17

The two-tailed test is more powerful than the one-tailed test.

Accepted Answer

A) True 
 B)False

Question 18

The alternative hypothesis: the percentage of Internet users who use the Internet for shopping is greater than .40,is a ________.

Accepted Answer

A)  one-tailed test 
B)  two-tailed test 
C)  Type I error 
D)  Type II error 
A)  one-tailed test 
B)  two-tailed test 
C)  Type I error 
D)  Type II error

Question 19

The ________ is a statistical test of the equality of the variances of two populations.

Accepted Answer

A)  z test 
B)  F test 
C)  t test 
D)  paired samples test 
A)  z test 
B)  F test 
C)  t test 
D)  paired samples test

Question 20

Measures of location or central tendency include the mean,median,and mode.

Accepted Answer

A) True 
 B)False

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

In cross-tabs,the introduction of a third variable can ________.

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

A statistic that describes a location within a data set is a ________.

The ________ can be used to assess the strength of association in a table of any size.

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

The degrees of freedom for the t statistic to test hypotheses about one mean are ________.

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

The ________ is a skewed distribution whose shape depends solely on the number of degrees of freedom.As the number of degrees of freedom increases,the distribution becomes more symmetrical.

If a variable is measured on a nominal scale,the median should be used.

The Range = XLargest - XSmallest.

Which of the following statements is not true about parametric tests?

A one-sample nonparametric goodness-of-fit test to determine whether the observations for a particular variable could reasonably have come from a particular distribution is the ________.

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

The null hypothesis,H0,when using the chi-square statistic,is that there is no association between the variables.

A frequency distribution helps ________.

The two-sample median test is not as powerful as the Mann-Whitney U test.

The two-tailed test is more powerful than the one-tailed test.

The alternative hypothesis: the percentage of Internet users who use the Internet for shopping is greater than .40,is a ________.

The ________ is a statistical test of the equality of the variances of two populations.

Measures of location or central tendency include the mean,median,and mode.

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

Casual Research Design: Experimentation

Measurement and Scaling: Fundamentals and Comparative Scaling

Measurement and Scaling: Non Comparative 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

International Marketing Research

Filters

The null hypothesis,H₀,when using the chi-square statistic,is that there is no association between the variables.