Question 1

Which of the research questions/hypotheses below is best answered using cross- tabulations?

Accepted Answer

A)  The department store is being patronized by more than 10 percent of households. 
B)  Is familiarity with a new product related to age and education levels? 
C)  One hotel has a more upscale image than its close competitor. 
D)  Both B and C are correct. 
A)  The department store is being patronized by more than 10 percent of households. 
B)  Is familiarity with a new product related to age and education levels? 
C)  One hotel has a more upscale image than its close competitor. 
D)  Both B and C are correct.

Question 2

As a general rule to follow to determine which of the different measures of location to use, if the variable is measured on a nominal scale, is the appropriate measure of central tendency that should be used.

Accepted Answer

A)  range 
B)  median 
C)  mean 
D)  mode 
A)  range 
B)  median 
C)  mean 
D)  mode

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

The square root of the variance is the .

Accepted Answer

A)  standard deviation 
B)  coefficient of variation 
C)  variance 
D)  interquartile range 
A)  standard deviation 
B)  coefficient of variation 
C)  variance 
D)  interquartile range

Question 5

Which of the research questions/hypotheses below is best answered using hypothesis testing?

Accepted Answer

A)  Is familiarity with a new product related to age and education levels after controlling for income? 
B)  One hotel has a more upscale image than its close competitor. 
C)  The department store is being patronized by more than 10 percent of households. 
D)  Both B and C are correct. 
A)  Is familiarity with a new product related to age and education levels after controlling for income? 
B)  One hotel has a more upscale image than its close competitor. 
C)  The department store is being patronized by more than 10 percent of households. 
D)  Both B and C are correct.

Question 6

Nonparametric tests are not available in .

Accepted Answer

A)  Excel 
B)  SPSS 
C)  MINITAB 
D)  SAS 
A)  Excel 
B)  SPSS 
C)  MINITAB 
D)  SAS

Question 7

The first step in hypothesis testing is to select an appropriate statistical technique and the corresponding test statistic.

Accepted Answer

A) True 
 B)False

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

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

Question 10

An asymmetrical lambda value of 1 happens when each independent variable category is associated with a single category of the dependent variable.

Accepted Answer

A) True 
 B)False

Question 11

A nonparametric test that analyzes the differences between the paired observations, taking into account the magnitude of the differences is the .

Accepted Answer

A)  McNemar test 
B)  sign test 
C)  Wilcoxon matched- pairs signed- ranks test 
D)  runs test 
A)  McNemar test 
B)  sign test 
C)  Wilcoxon matched- pairs signed- ranks test 
D)  runs test

Question 12

When measuring the strength of association with the contingency coefficient, the maximum value of 1 is achieved when the variables are perfectly associated.

Accepted Answer

A) True 
 B)False

Question 13

In the context of the Internet usage example, suppose we wanted to test whether the probability of observing a K value of .222, as determined by the normalized z statistic, is 0.103. Because this is more than the significance level of 0.05, the null hypothesis cannot be rejected. What do the results mean?

Accepted Answer

A)  The distribution of the Internet usage does deviate significantly from the normal distribution. 
B)  The proportion of users for males and for females is significantly different for the two samples. 
C)  The distribution of the Internet usage does not deviate significantly from the normal distribution. 
D)  The proportion of users for males and for females is not significantly different for the two samples. 
A)  The distribution of the Internet usage does deviate significantly from the normal distribution. 
B)  The proportion of users for males and for females is significantly different for the two samples. 
C)  The distribution of the Internet usage does not deviate significantly from the normal distribution. 
D)  The proportion of users for males and for females is not significantly different for the two samples.

Question 14

Hypothesis tests can be related to _.

Accepted Answer

A)  tests of strength 
B)  tests of association 
C)  tests of differences 
D)  B and C are correct 
A)  tests of strength 
B)  tests of association 
C)  tests of differences 
D)  B and C are correct

Question 15

Which of the research questions/hypotheses below is best answered using frequency distribution?

Accepted Answer

A)  What is the income distribution of brand users? Is this distribution skewed toward low income brackets? 
B)  The heavy and light users of a brand differ in terms of psychographic characteristics. 
C)  What percentage of the market consists of heavy users, medium users, light users, and nonusers? 
D)  Both A and C are correct. 
A)  What is the income distribution of brand users? Is this distribution skewed toward low income brackets? 
B)  The heavy and light users of a brand differ in terms of psychographic characteristics. 
C)  What percentage of the market consists of heavy users, medium users, light users, and nonusers? 
D)  Both A and C are correct.

Question 16

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

Accepted Answer

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

Question 17

Which statement is not related to statistics associated with cross- tabulation?

Accepted Answer

A)  The t test could be conducted on the mean of one sample or two samples of observations. 
B)  Generally, the strength of association is of interest only if the association is statistically significant. 
C)  The strength of association can be measured by the phi correlation coefficient, the contingency coefficient, Cramer's V, and the lambda coefficient. 
D)  The statistical significance of the observed association is commonly measured by the chi- square statistic. 
A)  The t test could be conducted on the mean of one sample or two samples of observations. 
B)  Generally, the strength of association is of interest only if the association is statistically significant. 
C)  The strength of association can be measured by the phi correlation coefficient, the contingency coefficient, Cramer's V, and the lambda coefficient. 
D)  The statistical significance of the observed association is commonly measured by the chi- square statistic.

Question 18

The null hypothesis refers to a specified value of the population parameter, not a sample statistic.

Accepted Answer

A) True 
 B)False

Question 19

The is the probability of rejecting the null hypothesis when it is in fact false, and should be rejected.

Accepted Answer

A)  level of significance 
B)  power of a test 
C)  Type II error 
D)  Type I error 
A)  level of significance 
B)  power of a test 
C)  Type II error 
D)  Type I error

Question 20

Which statement is not true concerning the t distribution?

Accepted Answer

A)  Compared to the normal distribution, the t distribution has more area in the tails and less in the center. 
B)  As the number of degrees of freedom increases, the t distribution approaches the normal distribution. 
C)  The population variance is unknown and is estimated by the sample variance s2. 
D)  The t distributions are skewed to the left. 
A)  Compared to the normal distribution, the t distribution has more area in the tails and less in the center. 
B)  As the number of degrees of freedom increases, the t distribution approaches the normal distribution. 
C)  The population variance is unknown and is estimated by the sample variance s2. 
D)  The t distributions are skewed to the left.

Exam 15: Frequency Distribution, Crosstabulation, and Hypothesis

Which of the research questions/hypotheses below is best answered using cross- tabulations?

As a general rule to follow to determine which of the different measures of location to use, if the variable is measured on a nominal scale, is the appropriate measure of central tendency that should be used.

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

The square root of the variance is the .

Which of the research questions/hypotheses below is best answered using hypothesis testing?

Nonparametric tests are not available in .

The first step in hypothesis testing is to select an appropriate statistical technique and the corresponding test statistic.

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

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

An asymmetrical lambda value of 1 happens when each independent variable category is associated with a single category of the dependent variable.

A nonparametric test that analyzes the differences between the paired observations, taking into account the magnitude of the differences is the .

When measuring the strength of association with the contingency coefficient, the maximum value of 1 is achieved when the variables are perfectly associated.

Hypothesis tests can be related to _.

Which of the research questions/hypotheses below is best answered using frequency distribution?

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

Which statement is not related to statistics associated with cross- tabulation?

The null hypothesis refers to a specified value of the population parameter, not a sample statistic.

The is the probability of rejecting the null hypothesis when it is in fact false, and should be rejected.

Which statement is not true concerning the t distribution?

Introduction to Marketing

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