Question 1

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. 
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 2

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 20 hours.   What is the third quartile for the distribution of number of sales per hour? _____________

Accepted Answer

Q3 = 6.75

Question 3

In a negatively skewed distribution, the coefficient of skewness is _______________.

Accepted Answer

negative o

Question 4

Percentiles divide a frequency distribution into _________ equal parts.

Accepted Answer

The answer of Percentiles divide a frequency distribution into _________...

Question 5

A stem-and-leaf display includes the following row: 5 | 10 11 31 52 79 98. Assume that the data is rounded to the nearest whole number.

Accepted Answer

A)  The frequency of the class is seven. 
B)  The minimum value in the class is 5. 
C)  The maximum value in the class is 98. 
D)  The class interval is 100. 
A)  The frequency of the class is seven. 
B)  The minimum value in the class is 5. 
C)  The maximum value in the class is 98. 
D)  The class interval is 100.

Question 6

A scatter diagram shows the ____________ between two interval or ratio variables.

Accepted Answer

The answer of A scatter diagram shows the ____________ between...

Question 7

The following graph illustrates

Accepted Answer

A)  A positive or direct relationship. 
B)  A negative or inverse relationship. 
C)  No relationship. 
D)  A distribution for a single variable. 
A)  A positive or direct relationship. 
B)  A negative or inverse relationship. 
C)  No relationship. 
D)  A distribution for a single variable.

Question 8

In a scatter diagram, we describe the relationship between

Accepted Answer

A)  two variables measured at the ordinal level. 
B)  two variables, one measured as an ordinal variable and the other as a ratio variable. 
C)  two variables measured at the interval or ratio level. 
D)  a variable measure on the interval or ratio level and time. 
A)  two variables measured at the ordinal level. 
B)  two variables, one measured as an ordinal variable and the other as a ratio variable. 
C)  two variables measured at the interval or ratio level. 
D)  a variable measure on the interval or ratio level and time.

Question 9

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median is 73. The standard deviation is 16.9 words per minute. What is the Pearson's coefficient of skewness?

Accepted Answer

A)  -2.5 
B)  -4.2 
C)  +4.2 
D)  +2.5 
A)  -2.5 
B)  -4.2 
C)  +4.2 
D)  +2.5

Question 10

In a contingency table, we describe the relationship between

Accepted Answer

A)  two variables measured at the ordinal or nominal level. 
B)  two variables, one measured as an ordinal variable and the other as a ratio variable. 
C)  two variables measured at the interval or ratio level. 
D)  a variable measure on the interval or ratio level and time. 
A)  two variables measured at the ordinal or nominal level. 
B)  two variables, one measured as an ordinal variable and the other as a ratio variable. 
C)  two variables measured at the interval or ratio level. 
D)  a variable measure on the interval or ratio level and time.

Question 11

What is the possible range of values for Pearson's coefficient of skewness?

Accepted Answer

A)  -1 and +1 
B)  -3 and +3 
C)  0% and 100% 
D)  Unlimited values 
A)  -1 and +1 
B)  -3 and +3 
C)  0% and 100% 
D)  Unlimited values

Question 12

What is the difference between a scatter diagram and a contingency table?

Accepted Answer

A scatter diagram requires int

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

For the following data, find the information required to construct a box plot.

Accepted Answer

Minimum = 9 1^st quarti

Question 15

The following stem and leaf display reports the number of boats shipped per week by Ottertail Boats, Inc.
11| 1 5 9
12| 0 1 2 2 6 9
13| 0 1 2 3 4 5 5 7 8 8 9
14| 2 6 8
15| 0 1 2 4 5 7 8 9
16| 1 5 7 9
What is the median value? _______________

Accepted Answer

138 boats

Question 16

A scatter diagram of sales versus production may be constructed by plotting the minimum, first quartile, median, third quartile, and the maximum values of each variable.

Accepted Answer

A) True 
 B)False

Question 17

What unit of measurement is used to express the coefficient of skewness? _________

Accepted Answer

The answer of What unit of measurement is used to...

Question 18

Using the following statistics to describe a distribution of data, what is the interquartile range?
 Minimum = 10
Q1 = 25
Median = 50
Q3 = 75
Maximum = 95

Accepted Answer

A)  85. 
B)  50. 
C)  15. 
D)  20. 
A)  85. 
B)  50. 
C)  15. 
D)  20.

Question 19

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 20 hours.   For the distribution of number of sales per hour, 50% are equal or greater than ___________.

Accepted Answer

the median

Question 20

The following graph is a

Accepted Answer

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

A dot plot can be used to show

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 20 hours. What is the third quartile for the distribution of number of sales per hour? _____________

In a negatively skewed distribution, the coefficient of skewness is _______________.

Percentiles divide a frequency distribution into _________ equal parts.

A stem-and-leaf display includes the following row: 5 | 10 11 31 52 79 98. Assume that the data is rounded to the nearest whole number.

A scatter diagram shows the ____________ between two interval or ratio variables.

The following graph illustrates

In a scatter diagram, we describe the relationship between

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median is 73. The standard deviation is 16.9 words per minute. What is the Pearson's coefficient of skewness?

In a contingency table, we describe the relationship between

What is the possible range of values for Pearson's coefficient of skewness?

What is the difference between a scatter diagram and a contingency table?

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

For the following data, find the information required to construct a box plot.

The following stem and leaf display reports the number of boats shipped per week by Ottertail Boats, Inc. 11| 1 5 9 12| 0 1 2 2 6 9 13| 0 1 2 3 4 5 5 7 8 8 9 14| 2 6 8 15| 0 1 2 4 5 7 8 9 16| 1 5 7 9 What is the median value? _______________

A scatter diagram of sales versus production may be constructed by plotting the minimum, first quartile, median, third quartile, and the maximum values of each variable.

What unit of measurement is used to express the coefficient of skewness? _________

Using the following statistics to describe a distribution of data, what is the interquartile range? Minimum = 10 Q1 = 25 Median = 50 Q3 = 75 Maximum = 95

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 20 hours. For the distribution of number of sales per hour, 50% are equal or greater than ___________.

The following graph is a

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters

Exam 4: Describing Data: Displaying and Exploring Data

A dot plot can be used to show

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 20 hours. What is the third quartile for the distribution of number of sales per hour? _____________

In a negatively skewed distribution, the coefficient of skewness is _______________.

Percentiles divide a frequency distribution into _________ equal parts.

A stem-and-leaf display includes the following row: 5 | 10 11 31 52 79 98. Assume that the data is rounded to the nearest whole number.

A scatter diagram shows the ____________ between two interval or ratio variables.

The following graph illustrates

In a scatter diagram, we describe the relationship between

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median is 73. The standard deviation is 16.9 words per minute. What is the Pearson's coefficient of skewness?

In a contingency table, we describe the relationship between

What is the possible range of values for Pearson's coefficient of skewness?

What is the difference between a scatter diagram and a contingency table?

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

For the following data, find the information required to construct a box plot.

The following stem and leaf display reports the number of boats shipped per week by Ottertail Boats, Inc. 11| 1 5 9 12| 0 1 2 2 6 9 13| 0 1 2 3 4 5 5 7 8 8 9 14| 2 6 8 15| 0 1 2 4 5 7 8 9 16| 1 5 7 9 What is the median value? _______________

A scatter diagram of sales versus production may be constructed by plotting the minimum, first quartile, median, third quartile, and the maximum values of each variable.

What unit of measurement is used to express the coefficient of skewness? _________

Using the following statistics to describe a distribution of data, what is the interquartile range? Minimum = 10 Q1 = 25 Median = 50 Q3 = 75 Maximum = 95

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 20 hours. For the distribution of number of sales per hour, 50% are equal or greater than ___________.

The following graph is a

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Index Numbers

Time Series and Forecasting

Nonparametric Methods: Goodness-Of-Fit Tests

Nonparametric Methods: Analysis of Ranked Data

Statistical Process Control and Quality Management

An Introduction to Decision Theory

Filters