Question 1

Here is the five number summary for salaries of U.S.marketing managers.
 
The IQR is ________________________ .

Accepted Answer

A) $83,060 
B) $22.057 
C) $69,693 
D) $77.020 
E) $14,566 
A) $83,060 
B) $22.057 
C) $69,693 
D) $77.020 
E) $14,566 B

Question 2

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers.
 
The shape of this distribution is ________________________ .

Accepted Answer

A) symmetric 
B) bimodal 
C) right skewed 
D) left skewed 
E) normal 
A) symmetric 
B) bimodal 
C) right skewed 
D) left skewed 
E) normal C

Question 3

The following table shows total assets ($ billion) for a small sample of U.S.banks.
 
The standard deviation for these data is ________________________ .

Accepted Answer

A) $12.78 billion 
B) $ 11.27 billion 
C) $ 127.01 billion 
D) $ 21.67 billion 
E) $ 34 billion 
A) $12.78 billion 
B) $ 11.27 billion 
C) $ 127.01 billion 
D) $ 21.67 billion 
E) $ 34 billion B

Question 4

The following table shows total assets ($ billion) for a small sample of U.S.banks.
 
The z- score for the total assets of Fifth Third Bank is ________________________ .

Accepted Answer

A) 1.25 
B) -1.25 
C) -2.5 
D) 1.97 
E) -1.97 
A) 1.25 
B) -1.25 
C) -2.5 
D) 1.97 
E) -1.97

Question 5

The following table shows total assets ($ billion) for a small sample of U.S.banks.
 
The mean for these data is ________________________ .

Accepted Answer

A) $ 80.25 billion 
B) $ 100.35 billion 
C) $ 75.68 billion 
D) $ 84 billion 
E) $ 89 billion 
A) $ 80.25 billion 
B) $ 100.35 billion 
C) $ 75.68 billion 
D) $ 84 billion 
E) $ 89 billion

Question 6

Consider the five number summary of hourly wages ($) for a sample of sales managers.Suppose the mean hourly wage is $38.50.What can we say about the shape of the distribution?

Accepted Answer

A) The distribution of hourly wages for sales managers is symmetric. 
B) The distribution of hourly wages for sales managers is skewed right. 
C) The distribution of hourly wages for sales managers is skewed left. 
D) The distribution of hourly wages for sales managers is bimodal. 
E) None of the above. 
A) The distribution of hourly wages for sales managers is symmetric. 
B) The distribution of hourly wages for sales managers is skewed right. 
C) The distribution of hourly wages for sales managers is skewed left. 
D) The distribution of hourly wages for sales managers is bimodal. 
E) None of the above.

Question 7

The following table shows representative recent closing share prices for a small sample of companies based in India in late 2013.
 
The standard deviation in closing share prices is ________________________ .

Accepted Answer

A) $81.6 
B) $25.8 
C) $36.6 
D) $62.7 
E) $67.6 
A) $81.6 
B) $25.8 
C) $36.6 
D) $62.7 
E) $67.6

Question 8

The following boxplots show monthly sales revenue figures ($ thousands) for a discount office supply company with locations in three different regions of the U.S.(Northeast, Southeast, and West).Which of the following statements is false?

Accepted Answer

A) The West has the most variable sales revenues. 
B) The West has the largest IQR. 
C) The Southeast has the smallest IQR. 
D) The Northeast has the most variable sales revenues. 
E) The Southeast has the least variable sales revenues. 
A) The West has the most variable sales revenues. 
B) The West has the largest IQR. 
C) The Southeast has the smallest IQR. 
D) The Northeast has the most variable sales revenues. 
E) The Southeast has the least variable sales revenues.

Question 9

The following table shows data for total assets ($ billion) for a small sample of U.S.banks (late 2013).
 
The mean for the total assets data ($ billion) is ________________________ .

Accepted Answer

A) $78.3 
B) $56.3 
C) $85.6 
D) $120.5 
E) $42.4 
A) $78.3 
B) $56.3 
C) $85.6 
D) $120.5 
E) $42.4

Question 10

Consider the five number summary of hourly wages ($) for a sample of sales managers.
 
The IQR for these data is ________________________ .

Accepted Answer

A) $11.70 
B) $46.17 
C) $67.11 
D) $20.94 
E) $44.77 
A) $11.70 
B) $46.17 
C) $67.11 
D) $20.94 
E) $44.77

Question 11

The ASQ (American Society for Quality) regularly conducts a salary survey of its membership, primarily quality management professionals.Based on the most recently published mean and standard deviation, a quality control specialist calculated the z-score associated with his own salary and found it was -2.50.This tells him that his salary ________________________ .

Accepted Answer

A) 2 and a half times more than the average salary 
B) 2 and a half times less than the average salary 
C) is 2.5 standard deviations above the average salary 
D) is 2.5 standard deviations below the average salary 
E) much higher than the average salary 
A) 2 and a half times more than the average salary 
B) 2 and a half times less than the average salary 
C) is 2.5 standard deviations above the average salary 
D) is 2.5 standard deviations below the average salary 
E) much higher than the average salary

Question 12

The following boxplots show monthly sales revenue figures ($ thousands) for a discount office supply company with locations in three different regions of the U.S.(Northeast, Southeast, and West).Which of the following statements is true?

Accepted Answer

A) The Northeast has the lowest mean sales revenue. 
B) The Southeast has the lowest median sales revenue. 
C) The West has the lowest mean sales revenue. 
D) The West has the lowest median sales revenue. 
E) None of the above. 
A) The Northeast has the lowest mean sales revenue. 
B) The Southeast has the lowest median sales revenue. 
C) The West has the lowest mean sales revenue. 
D) The West has the lowest median sales revenue. 
E) None of the above.

Question 13

Consider the five number summary of hourly wages ($) for a sample of sales managers.
 
The range for these data is ________________________ .

Accepted Answer

A) $11.70 
B) $46.17 
C) $67.11 
D) $20.94 
E) $44.77 
A) $11.70 
B) $46.17 
C) $67.11 
D) $20.94 
E) $44.77

Question 14

The following table shows representative recent closing share prices in late 2013 for a small sample of companies based in India.
 
The z score for the share price for ABC Paper is ________________________ .

Accepted Answer

A) 2.76 
B) 0.47 
C) -2.76 
D) -1.49 
E) -0.47 
A) 2.76 
B) 0.47 
C) -2.76 
D) -1.49 
E) -0.47

Question 15

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers.
 
The most appropriate measure of central tendency for these data is the ________________________ .

Accepted Answer

A) median 
B) mean 
C) mode 
D) range 
E) standard deviation 
A) median 
B) mean 
C) mode 
D) range 
E) standard deviation

Question 16

Consider the five number summary of hourly wages ($) for a sample of advertising / promotion managers.
 
Suppose there had been an error and that the lowest hourly wage was $15.50 instead of $19.64.This would result in ________________________ .

Accepted Answer

A) an increase in the median 
B) an increase in the standard deviation 
C) a decrease in the range 
D) a decrease in the IQR 
E) an increase in the mean 
A) an increase in the median 
B) an increase in the standard deviation 
C) a decrease in the range 
D) a decrease in the IQR 
E) an increase in the mean

Exam 3: Describing, Displaying, and Visualizing Quantitative Data

Here is the five number summary for salaries of U.S.marketing managers. The IQR is ________________________ .

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers. The shape of this distribution is ________________________ .

The following table shows total assets ($ billion) for a small sample of U.S.banks. The standard deviation for these data is ________________________ .

The following table shows total assets ($ billion) for a small sample of U.S.banks. The z- score for the total assets of Fifth Third Bank is ________________________ .

The following table shows total assets ($ billion) for a small sample of U.S.banks. The mean for these data is ________________________ .

Consider the five number summary of hourly wages ($) for a sample of sales managers.Suppose the mean hourly wage is $38.50.What can we say about the shape of the distribution?

The following table shows representative recent closing share prices for a small sample of companies based in India in late 2013. The standard deviation in closing share prices is ________________________ .

The following boxplots show monthly sales revenue figures ($ thousands) for a discount office supply company with locations in three different regions of the U.S.(Northeast, Southeast, and West).Which of the following statements is false?

The following table shows data for total assets ($ billion) for a small sample of U.S.banks (late 2013). The mean for the total assets data ($ billion) is ________________________ .

Consider the five number summary of hourly wages ($) for a sample of sales managers. The IQR for these data is ________________________ .

The following boxplots show monthly sales revenue figures ($ thousands) for a discount office supply company with locations in three different regions of the U.S.(Northeast, Southeast, and West).Which of the following statements is true?

Consider the five number summary of hourly wages ($) for a sample of sales managers. The range for these data is ________________________ .

The following table shows representative recent closing share prices in late 2013 for a small sample of companies based in India. The z score for the share price for ABC Paper is ________________________ .

Below is a histogram of salaries (in $) for a sample of U.S.marketing managers. The most appropriate measure of central tendency for these data is the ________________________ .

Consider the five number summary of hourly wages ($) for a sample of advertising / promotion managers. Suppose there had been an error and that the lowest hourly wage was $15.50 instead of $19.64.This would result in ________________________ .

Data and Decisions

Visualizing and Describing Categorical Data

Correlation and Linear Regression

Randomness and Probability

Random Variables and Probability Models

The Normal and Other Continuous Distributions

Data Sources: Observational Studies and Surveys

Data Sources: Experiments

Sampling Distributions and Confidence Intervals for Proportio

Confidence Intervals for Means

Testing Hypotheses

More About Tests and Intervals

Comparing Two Means

Inference for Counts: Chi-Square Tests

Inference for Regression

Understanding Residuals

Multiple Regression

Building Multiple Regression Models

Time Series Analysis

Introduction to Data Mining

Quality Control

Nonparametric Methods

Decision Making and Risk

Analysis of Experiments and Observational Studies

Statistics and Data Analysis

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