Question 1

A dot plot is useful for showing individual observations.

Accepted Answer

A) True 
 B)False

Question 2

A stem-and-leaf display includes the following row: 3 | 0 1 3 5 7 9. Assume that the data is rounded to the nearest whole number. Which of the following statements is true?

Accepted Answer

A)   The frequency of the class is seven.
B)   The minimum value in the class is 0.
C)   The maximum value in the class is 39.
D)   The class interval is 5.

Question 3

A dot plot can be used to show _________________.

Accepted Answer

A)   The mean, median, and mode
B)   The general shape of a distribution for a nominal qualitative variable
C)   The distribution for a quantitative variable
D)   The interquartile range

Question 4

The ______________ is used to measure the relative symmetry of a distribution.

Accepted Answer

coefficien...

Question 5

The interquartile range is graphically presented in a ___________.

Accepted Answer

A)   Dot plot
B)   Stem-and-leaf display
C)   Box plot
D)   Contingency table

Question 6

The following graph is _______________.

Accepted Answer

A)   Positively skewed
B)   Negatively skewed
C)   Symmetric
D)   Uniformly distributed

Question 7

The following table is a:

Accepted Answer

A)   Dot plot
B)   Stem-and-leaf display
C)   Box plot
D)   Contingency table

Question 8

Percentiles divide a distribution into 100 equal parts.

Accepted Answer

A) True 
 B)False

Question 9

The coefficient of skewness measures a distribution's ____________ symmetry.

Accepted Answer

The answer of The coefficient of skewness measures a distribution's...

Question 10

Outliers are clearly presented in a _____________.

Accepted Answer

A)   Dot plot
B)   Stem-and-leaf display
C)   Box plot
D)   Contingency table

Question 11

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 19 hours.  For the distribution of number of sales per hour, 50% are equal or greater than ___________.

Accepted Answer

the median or 5 sales per hour...

Question 12

In a stem-and-leaf display, the leaf represents the members of a class in a frequency distribution.

Accepted Answer

A) True 
 B)False

Question 13

The following graph is a ___________.

Accepted Answer

A)   Dot plot
B)   Stem-and-leaf display
C)   Box plot
D)   Scatter plot

Question 14

A stem-and-leaf diagram shows the actual data values.

Accepted Answer

A) True 
 B)False

Question 15

In the following table,

Accepted Answer

A)   The median is 2.5.
B)   The minimum value is 135.
C)   The maximum value is 456.
D)   The range is 33.

Question 16

A ___________ uses dots to show frequencies.

Accepted Answer

The answer of A ___________ uses dots to show frequencies....

Question 17

In a distribution, the second quartile corresponds with the __________.

Accepted Answer

A)   Mean
B)   Median
C)   Mode
D)   Variance

Question 18

The eighth decile:

Accepted Answer

A)   contains at least 70 percent of the observations.
B)   is the same as the 40th percentile.
C)   is the same as the 70th percentile.
D)   is the same as the 80th percentile.

Question 19

The following graph is a:

Accepted Answer

A)   Dot plot
B)   Stem-and-leaf display
C)   Box plot
D)   Contingency table

Question 20

Which of the following is not a measure of dispersion?

Accepted Answer

A)   The interquartile range
B)   The standard deviation
C)   The 50th percentile
D)   The range

Exam 4: Describing Data: Displaying and Exploring Data

A ___________ uses dots to show frequencies.

Correct AnswerverifiedShow Answer

Percentiles divide a distribution into 100 equal parts.

Correct AnswerverifiedShow Answer

In a stem-and-leaf display, the leaf represents the members of a class in a frequency distribution.

Correct AnswerverifiedShow Answer

The following graph is a:

Correct AnswerverifiedShow Answer

A dot plot can be used to show _________________.

Correct AnswerverifiedShow Answer

Which of the following is not a measure of dispersion?

Correct AnswerverifiedShow Answer

A dot plot is useful for showing individual observations.

Correct AnswerverifiedShow Answer

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 19 hours. For the distribution of number of sales per hour, 50% are equal or greater than ___________.

Correct Answerverifiedthe median or 5 sales per hour...View AnswerShow Answer

The eighth decile:

Correct AnswerverifiedShow Answer

The following table is a:

Correct AnswerverifiedShow Answer

The following graph is _______________.

Correct AnswerverifiedShow Answer

The interquartile range is graphically presented in a ___________.

Correct AnswerverifiedShow Answer

In the following table,

Correct AnswerverifiedShow Answer

A stem-and-leaf display includes the following row: 3 | 0 1 3 5 7 9. Assume that the data is rounded to the nearest whole number. Which of the following statements is true?

Correct AnswerverifiedShow Answer

The following graph is a ___________.

Correct AnswerverifiedShow Answer

The coefficient of skewness measures a distribution's ____________ symmetry.

Correct AnswerverifiedShow Answer

The ______________ is used to measure the relative symmetry of a distribution.

Correct Answerverifiedcoefficien...View AnswerShow Answer

Outliers are clearly presented in a _____________.

Correct AnswerverifiedShow Answer

In a distribution, the second quartile corresponds with the __________.

Correct AnswerverifiedShow Answer

A stem-and-leaf diagram shows the actual data values.

Correct AnswerverifiedShow Answer

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the median or 5 sales per hour...
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coefficien...
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