Question 1

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as a _____ line.

Accepted Answer

A)  determination 
B)  trend 
C)  control 
D)  zero-bias 
A)  determination 
B)  trend 
C)  control 
D)  zero-bias

Question 2

A graphical method that can be used to show both the rank order and shape of a distribution of data simultaneously is a​

Accepted Answer

A)  ​relative frequency distribution. 
B)  ​pie chart. 
C)  ​stem-and-leaf display. 
D)  ​dot plot. 
A)  ​relative frequency distribution. 
B)  ​pie chart. 
C)  ​stem-and-leaf display. 
D)  ​dot plot.

Question 3

A frequency distribution is a tabular summary of data showing the _____ of items in several classes.

Accepted Answer

A)  fraction 
B)  percentage 
C)  relative percentage 
D)  number 
A)  fraction 
B)  percentage 
C)  relative percentage 
D)  number

Question 4

The most common graphical presentation of quantitative data is a

Accepted Answer

A)  histogram. 
B)  bar chart. 
C)  dot plot. 
D)  pie chart. 
A)  histogram. 
B)  bar chart. 
C)  dot plot. 
D)  pie chart.

Question 5

A tabular summary of a set of data showing the fraction of the total number of items in several classes is a _____ distribution.

Accepted Answer

A)  frequency 
B)  relative frequency 
C)  cumulative relative frequency 
D)  cumulative frequency 
A)  frequency 
B)  relative frequency 
C)  cumulative relative frequency 
D)  cumulative frequency

Question 6

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.   ​ Of those students who are majoring in engineering, what percentage plans to go to graduate school?

Accepted Answer

A)  28.77 
B)  10.5 
C)  40.38 
D)  71.23 
A)  28.77 
B)  10.5 
C)  40.38 
D)  71.23

Question 7

​The approximate class width for a frequency distribution involving quantitative data can be determined using the expression

Accepted Answer

A)  ​mean frequency/total frequency. 
B)  ​total frequency/class midpoint. 
C)  ​range/desired number of classes. 
D)  ​desired number of classes/class midpoint. 
A)  ​mean frequency/total frequency. 
B)  ​total frequency/class midpoint. 
C)  ​range/desired number of classes. 
D)  ​desired number of classes/class midpoint.

Question 8

The frequency distribution below was constructed from data collected from a group of 25 students.   ​ 
a.
Construct a relative frequency distribution.
b.
Construct a cumulative frequency distribution.
c.
Construct a cumulative relative frequency distribution.

Accepted Answer

The answer of The frequency distribution below was constructed from...

Question 9

When the conclusions based upon the unaggregated data can be completely reversed if we look at the aggregated crosstabulation, the occurrence is known as

Accepted Answer

A)  ​Reverse correlation. 
B)  ​Negative correlation​. 
C)  ​Simpson's paradox. 
D)  ​Pareto's rule. 
A)  ​Reverse correlation. 
B)  ​Negative correlation​. 
C)  ​Simpson's paradox. 
D)  ​Pareto's rule.

Question 10

Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting.The graphical device(s) which can be used to present these data is (are)

Accepted Answer

A)  a line chart. 
B)  only a bar chart. 
C)  only a pie chart. 
D)  both a bar chart and a pie chart. 
A)  a line chart. 
B)  only a bar chart. 
C)  only a pie chart. 
D)  both a bar chart and a pie chart.

Question 11

The difference between consecutive lower class or upper class limits of adjacent classes provides the

Accepted Answer

A)  number of classes. 
B)  class limits. 
C)  class midpoint. 
D)  class width. 
A)  number of classes. 
B)  class limits. 
C)  class midpoint. 
D)  class width.

Question 12

The grades of 10 students in their first management test are shown below.   ​ 
a.
Construct a frequency distribution.Let the first class be 60 - 69.
b.
Construct a cumulative frequency distribution.
c.
Construct a relative frequency distribution.

Accepted Answer

The answer of The grades of 10 students in their...

Question 13

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal​

Accepted Answer

A)  ​0. 
B)  ​-1. 
C)  ​1. 
D)  ​10. 
A)  ​0. 
B)  ​-1. 
C)  ​1. 
D)  ​10.

Question 14

The numbers of hours worked (per week) by 400 statistics students are shown below.   ​ The relative frequency of students working 0 - 9 hours per week is

Accepted Answer

A)  .05 
B)  .20 
C)  .25 
D)  .50 
A)  .05 
B)  .20 
C)  .25 
D)  .50

Question 15

The relative frequency of a class is computed by

Accepted Answer

A)  dividing the cumulative frequency of the class by the total number of elements in the data set. 
B)  dividing n by cumulative frequency of the class. 
C)  dividing the frequency of the class by the total number of elements in the data set. 
D)  dividing the frequency of the class by the number of classes. 
A)  dividing the cumulative frequency of the class by the total number of elements in the data set. 
B)  dividing n by cumulative frequency of the class. 
C)  dividing the frequency of the class by the total number of elements in the data set. 
D)  dividing the frequency of the class by the number of classes.

Question 16

The following data set shows the number of hours of sick leave that some of the employees of Bastien's, Inc.have taken during the first quarter of the year (rounded to the nearest hour).   ​ 
a.
Develop a frequency distribution for the above data.(Let the width of your classes be 10 units and start your first class as 10 - 19.)
b.
Develop a relative frequency distribution and a percent frequency distribution for the data.
c.
Develop a cumulative frequency distribution.
d.
How many employees have taken less than 40 hours of sick leave?

Accepted Answer

The answer of The following data set shows the number...

Question 17

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.   ​ Of those students who are planning on going to graduate school, what percentage are majoring in engineering?

Accepted Answer

A)  10.5 
B)  28.8 
C)  30.0 
D)  40.4 
A)  10.5 
B)  28.8 
C)  30.0 
D)  40.4

Question 18

The numbers of hours worked (per week) by 400 statistics students are shown below.   ​ The midpoint of the third class is

Accepted Answer

A)  25.5 
B)  24. 
C)  25. 
D)  24.5. 
A)  25.5 
B)  24. 
C)  25. 
D)  24.5.

Question 19

The sum of the relative frequencies for all classes will always equal

Accepted Answer

A)  the sample size. 
B)  100%. 
C)  one. 
D)  any value larger than one. 
A)  the sample size. 
B)  100%. 
C)  one. 
D)  any value larger than one.

Question 20

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should​

Accepted Answer

A)  ​investigate whether any hidden variables could affect the conclusions. 
B)  ​construct a scatter diagram and find the trendline. 
C)  ​develop a relative frequency distribution. 
D)  ​construct a dot plot and look for significant gaps. 
A)  ​investigate whether any hidden variables could affect the conclusions. 
B)  ​construct a scatter diagram and find the trendline. 
C)  ​develop a relative frequency distribution. 
D)  ​construct a dot plot and look for significant gaps.

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as a _____ line.

A graphical method that can be used to show both the rank order and shape of a distribution of data simultaneously is a

A frequency distribution is a tabular summary of data showing the _____ of items in several classes.

The most common graphical presentation of quantitative data is a

A tabular summary of a set of data showing the fraction of the total number of items in several classes is a _____ distribution.

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Of those students who are majoring in engineering, what percentage plans to go to graduate school?

The approximate class width for a frequency distribution involving quantitative data can be determined using the expression

The frequency distribution below was constructed from data collected from a group of 25 students. a. Construct a relative frequency distribution. b. Construct a cumulative frequency distribution. c. Construct a cumulative relative frequency distribution.

When the conclusions based upon the unaggregated data can be completely reversed if we look at the aggregated crosstabulation, the occurrence is known as

Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting.The graphical device(s) which can be used to present these data is (are)

The difference between consecutive lower class or upper class limits of adjacent classes provides the

The grades of 10 students in their first management test are shown below. a. Construct a frequency distribution.Let the first class be 60 - 69. b. Construct a cumulative frequency distribution. c. Construct a relative frequency distribution.

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal

The numbers of hours worked (per week) by 400 statistics students are shown below. The relative frequency of students working 0 - 9 hours per week is

The relative frequency of a class is computed by

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Of those students who are planning on going to graduate school, what percentage are majoring in engineering?

The numbers of hours worked (per week) by 400 statistics students are shown below. The midpoint of the third class is

The sum of the relative frequencies for all classes will always equal

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 2: Descriptive Statistics: Tabular and Graphical Displays

In a scatter diagram, a line that provides an approximation of the relationship between the variables is known as a _____ line.

A graphical method that can be used to show both the rank order and shape of a distribution of data simultaneously is a​

A frequency distribution is a tabular summary of data showing the _____ of items in several classes.

The most common graphical presentation of quantitative data is a

A tabular summary of a set of data showing the fraction of the total number of items in several classes is a _____ distribution.

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. ​ Of those students who are majoring in engineering, what percentage plans to go to graduate school?

​The approximate class width for a frequency distribution involving quantitative data can be determined using the expression

The frequency distribution below was constructed from data collected from a group of 25 students. ​ a. Construct a relative frequency distribution. b. Construct a cumulative frequency distribution. c. Construct a cumulative relative frequency distribution.

When the conclusions based upon the unaggregated data can be completely reversed if we look at the aggregated crosstabulation, the occurrence is known as

Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting.The graphical device(s) which can be used to present these data is (are)

The difference between consecutive lower class or upper class limits of adjacent classes provides the

The grades of 10 students in their first management test are shown below. ​ a. Construct a frequency distribution.Let the first class be 60 - 69. b. Construct a cumulative frequency distribution. c. Construct a relative frequency distribution.

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal​

The numbers of hours worked (per week) by 400 statistics students are shown below. ​ The relative frequency of students working 0 - 9 hours per week is

The relative frequency of a class is computed by

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. ​ Of those students who are planning on going to graduate school, what percentage are majoring in engineering?

The numbers of hours worked (per week) by 400 statistics students are shown below. ​ The midpoint of the third class is

The sum of the relative frequencies for all classes will always equal

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should​

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Comparing Multiple Proportions, Tests of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

A graphical method that can be used to show both the rank order and shape of a distribution of data simultaneously is a

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Of those students who are majoring in engineering, what percentage plans to go to graduate school?

The approximate class width for a frequency distribution involving quantitative data can be determined using the expression

The frequency distribution below was constructed from data collected from a group of 25 students. a. Construct a relative frequency distribution. b. Construct a cumulative frequency distribution. c. Construct a cumulative relative frequency distribution.

The grades of 10 students in their first management test are shown below. a. Construct a frequency distribution.Let the first class be 60 - 69. b. Construct a cumulative frequency distribution. c. Construct a relative frequency distribution.

For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal

The numbers of hours worked (per week) by 400 statistics students are shown below. The relative frequency of students working 0 - 9 hours per week is

A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school. Of those students who are planning on going to graduate school, what percentage are majoring in engineering?

The numbers of hours worked (per week) by 400 statistics students are shown below. The midpoint of the third class is

Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should