Question 1

In analysis of variance, "sums of squares explained" could be interpreted as being proportional to

Accepted Answer

A) the difference between a group's mean and a given group member 
B) the difference between a group's mean and the overall mean 
C) the sum of the inter-group and intra-group variance 
D) the sum of variance between all group members 
E) none of the above 
A) the difference between a group's mean and a given group member 
B) the difference between a group's mean and the overall mean 
C) the sum of the inter-group and intra-group variance 
D) the sum of variance between all group members 
E) none of the above B

Question 2

A good descriptive statistic of measuring the strength of association is to measure "Rho," which is the proportion of variance accounted for in the sample data.

Accepted Answer

A) True 
 B)False  True

Question 3

A measure of spread of data is called

Accepted Answer

A) standard deviation 
B) mean 
C) range 
D) skewness 
A) standard deviation 
B) mean 
C) range 
D) skewness C

Question 4

The hypothesized value of the defect free printers is

Accepted Answer

A) 0.87 
B) 0.13 
C) 0.95 
D) 0.05 
E) none of the above. 
A) 0.87 
B) 0.13 
C) 0.95 
D) 0.05 
E) none of the above.

Question 5

In an ANOVA test, if the "between-treatment variance" is lesser than the "within-treatment variance," then the null hypothesis can be rejected.

Accepted Answer

A) True 
 B)False

Question 6

There is a trade-off involved between the costs of each of the two kinds of errors

Accepted Answer

A) True 
 B)False

Question 7

In an ANOVA test, "between-treatment variance" corresponds to the variance in the response variable for different treatments.

Accepted Answer

A) True 
 B)False

Question 8

In a hypothesis test when alpha is pre-specified, the researcher is trying to determine "Is the probability of what has been observed lesser than alpha?" and then decide accordingly.

Accepted Answer

A) True 
 B)False

Question 9

The z test statistic is

Accepted Answer

A) ñ1.645 
B) ñ1.96 
C) ñ3.08 
D) ñ2.25 
E) none of the above. 
A) ñ1.645 
B) ñ1.96 
C) ñ3.08 
D) ñ2.25 
E) none of the above.

Question 10

In an ANOVA test, "within-treatment variance" corresponds to the variance in the response variable for a given treatment.

Accepted Answer

A) True 
 B)False

Question 11

The decision rule is

Accepted Answer

A) reject the null and conclude that the product doesn't meet specifications. 
B) fail to reject the null and conclude that the product meets specifications. 
C) inadequate sample size and hence conduct a retest. 
D) standard deviation of the sample to be calculated. 
E) none of the above. 
A) reject the null and conclude that the product doesn't meet specifications. 
B) fail to reject the null and conclude that the product meets specifications. 
C) inadequate sample size and hence conduct a retest. 
D) standard deviation of the sample to be calculated. 
E) none of the above.

Question 12

The choice of the distribution depends only on the size of the sample

Accepted Answer

A) True 
 B)False

Question 13

The greater the p-value, the higher is the researcher's confidence in the research findings.

Accepted Answer

A) True 
 B)False

Question 14

To measure the difference between means or the difference between independent sample proportions, one would probably use which statistical technique ?

Accepted Answer

A) chi-square test 
B) sign test 
C) F-test 
D) t-test 
A) chi-square test 
B) sign test 
C) F-test 
D) t-test

Question 15

Standard deviation is a measure of spread of data

Accepted Answer

A) True 
 B)False

Question 16

Standard error of the proportions is

Accepted Answer

A) 0.0145 
B) 0.02 
C) -0.0145 
D) 0.308 
E) 0.05 
A) 0.0145 
B) 0.02 
C) -0.0145 
D) 0.308 
E) 0.05

Question 17

The ANOVA table is a conventional way to present a hypothesis test regarding the difference between several means.

Accepted Answer

A) True 
 B)False

Question 18

The p-value can be defined as the largest significance level at which we would accept the null hypothesis.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is not an underlying assumption for the ANOVA model ?

Accepted Answer

A) The error effects are normally distributed 
B) The mean of the error effects is zero 
C) The variance of the error effects is zero 
D) The error effects are uncorrelated 
A) The error effects are normally distributed 
B) The mean of the error effects is zero 
C) The variance of the error effects is zero 
D) The error effects are uncorrelated

Question 20

The p-value is independent of the sample size.

Accepted Answer

A) True 
 B)False

Exam 18: Hypothesis Testing: Means and Proportions

In analysis of variance, "sums of squares explained" could be interpreted as being proportional to

A good descriptive statistic of measuring the strength of association is to measure "Rho," which is the proportion of variance accounted for in the sample data.

A measure of spread of data is called

The hypothesized value of the defect free printers is

In an ANOVA test, if the "between-treatment variance" is lesser than the "within-treatment variance," then the null hypothesis can be rejected.

There is a trade-off involved between the costs of each of the two kinds of errors

In an ANOVA test, "between-treatment variance" corresponds to the variance in the response variable for different treatments.

In a hypothesis test when alpha is pre-specified, the researcher is trying to determine "Is the probability of what has been observed lesser than alpha?" and then decide accordingly.

The z test statistic is

In an ANOVA test, "within-treatment variance" corresponds to the variance in the response variable for a given treatment.

The decision rule is

The choice of the distribution depends only on the size of the sample

The greater the p-value, the higher is the researcher's confidence in the research findings.

To measure the difference between means or the difference between independent sample proportions, one would probably use which statistical technique ?

Standard deviation is a measure of spread of data

Standard error of the proportions is

The ANOVA table is a conventional way to present a hypothesis test regarding the difference between several means.

The p-value can be defined as the largest significance level at which we would accept the null hypothesis.

Which of the following is not an underlying assumption for the ANOVA model ?

The p-value is independent of the sample size.

A Decision Making Perspective on Marketing Intelligence

Marketing Research in Practice

The Marketing Research Process

Research Design and Implementation

Secondary Sources of Marketing Data

Standardized Sources of Marketing Data

Marketing Research on the Internet

Information Collection: Qualitative and Observational Methods

Information From Respondents: Issues in Data Collection

Information From Respondents: Survey Methods

Ttitude Measurement

Signing the Questionnaire

Xperimentation

Sampling Fundamentals

Sample Size and Statistical Theory

Fundamentals of Data Analysis

Hypothesis Testing: Basic Concepts and Tests of Association

Correlation Analysis and Regression Analysis

Iscriminant, Factor and Cluster Analysis

Multidimensional Scaling and Conjoint Analysis

Presenting the Results

Marketing-Mix Measures

Ontemporary Applications of Marketing Intelligence

Atabase Marketing, E-Commerce, Relationship

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