Question 1

In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to

Accepted Answer

A)  one. 
B)  100%. 
C)  the total number of elements in the data set. 
D)  10. 
A)  one. 
B)  100%. 
C)  the total number of elements in the data set. 
D)  10.

Question 2

In a cumulative relative frequency distribution, the last class will have a cumulative relative frequency equal to

Accepted Answer

A)  one. 
B)  zero. 
C)  the total number of elements in the data set. 
D)  the total of classes in the data set. 
A)  one. 
B)  zero. 
C)  the total number of elements in the data set. 
D)  the total of classes in the data set.

Question 3

​In a stem-and-leaf display,

Accepted Answer

A)  ​a single digit is used to define each stem, and a single digit is used to define each leaf. 
B)  ​a single digit is used to define each stem, and one or more digits are used to define each leaf. 
C)  ​one or more digits are used to define each stem, and a single digit is used to define each leaf. 
D)  ​one or more digits are used to define each stem, and one or more digits are used to define each leaf. 
A)  ​a single digit is used to define each stem, and a single digit is used to define each leaf. 
B)  ​a single digit is used to define each stem, and one or more digits are used to define each leaf. 
C)  ​one or more digits are used to define each stem, and a single digit is used to define each leaf. 
D)  ​one or more digits are used to define each stem, and one or more digits are used to define each leaf.

Question 4

A cumulative relative frequency distribution shows

Accepted Answer

A)  the proportion of data items with values less than or equal to the upper limit of each class. 
B)  the proportion of data items with values less than or equal to the lower limit of each class. 
C)  the percentage of data items with values less than or equal to the upper limit of each class. 
D)  the percentage of data items with values less than or equal to the lower limit of each class. 
A)  the proportion of data items with values less than or equal to the upper limit of each class. 
B)  the proportion of data items with values less than or equal to the lower limit of each class. 
C)  the percentage of data items with values less than or equal to the upper limit of each class. 
D)  the percentage of data items with values less than or equal to the lower limit of each class.

Question 5

​Which of the following is least useful in making comparisons or showing the relationships of two variables?

Accepted Answer

A)  Stacked bar chart 
B)  ​Stem-and-leaf display 
C)  ​Crosstabulation 
D)  ​Scatter diagram 
A)  Stacked bar chart 
B)  ​Stem-and-leaf display 
C)  ​Crosstabulation 
D)  ​Scatter diagram

Question 6

The following data shows the price of PAO, Inc.stock over the last 8 months. $$\begin{array} { l l } 
\text { Month } & \text { Price } \
1 & 2.08 \
2 & 2.00 \
3 & 2.03 \
4 & 1.91 \
5 & 1.88 \
6 & 1.87 \
7 & 1.70 \
8 & 1.67
\end{array}$$ ​ 
a.
Develop a scatter diagram and draw a trend line through the points.
b.
What kind of relationship exists between stock price and time (negative, positive, or no relation)?

Accepted Answer

The answer of The following data shows the price of...

Question 7

A researcher is gathering data from four geographical areas designated: South =1; North = 2; East = 3; West = 4.The designated geographical regions represent?

Accepted Answer

A)  categorical data. 
B)  quantitative data. 
C)  crosstabular data. 
D)  either categorical or quantitative data. 
A)  categorical data. 
B)  quantitative data. 
C)  crosstabular data. 
D)  either categorical or quantitative data.

Question 8

Which of the following is not a recommended guideline for creating an effective graphical display?​

Accepted Answer

A)  Give the display a clear and concise title 
B)  ​Use three dimensions whenever possible, to give the display depth 
C)  ​If colors are used to distinguish categories, use a legend to define them 
D)  ​Label each axis and show the units of measure 
A)  Give the display a clear and concise title 
B)  ​Use three dimensions whenever possible, to give the display depth 
C)  ​If colors are used to distinguish categories, use a legend to define them 
D)  ​Label each axis and show the units of measure

Question 9

The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to​

Accepted Answer

A)  ​exclude a stem labeled '8. 
B)  ​include a stem labeled '8' and enter no leaves on the stem. 
C)  ​include a stem labeled '(8)' and enter no leaves on the stem. 
D)  ​include a stem labeled '8' and enter one leaf value of '0' on the stem. 
A)  ​exclude a stem labeled '8. 
B)  ​include a stem labeled '8' and enter no leaves on the stem. 
C)  ​include a stem labeled '(8)' and enter no leaves on the stem. 
D)  ​include a stem labeled '8' and enter one leaf value of '0' on the stem.

Question 10

The difference between the lower 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 11

The total number of data items with a value less than the upper limit for the class is given by the

Accepted Answer

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

Question 12

A graphical presentation of the relationship between two quantitative variables is​

Accepted Answer

A)  ​dot plot. 
B)  ​histogram. 
C)  ​stem-and-leaf display. 
D)  ​scatter diagram. 
A)  ​dot plot. 
B)  ​histogram. 
C)  ​stem-and-leaf display. 
D)  ​scatter diagram.

Question 13

In quality control applications, bar charts are used to identify the most important causes of problems.When the bars are arranged in descending order of height from left to right with the most frequently occurring cause appearing first, the bar chart is called a​

Accepted Answer

A)  ​Cause-and-effect diagram. 
B)  ​Simpson,s chart. 
C)  ​Pareto diagram. 
D)  ​Stacked bar chart. 
A)  ​Cause-and-effect diagram. 
B)  ​Simpson,s chart. 
C)  ​Pareto diagram. 
D)  ​Stacked bar chart.

Question 14

Data that provide labels or names for categories of like items are known as

Accepted Answer

A)  categorical data. 
B)  quantitative data. 
C)  label data. 
D)  category data. 
A)  categorical data. 
B)  quantitative data. 
C)  label data. 
D)  category data.

Question 15

​A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a

Accepted Answer

A)  ​histogram. 
B)  ​stem-and-leaf display. 
C)  ​dot plot. 
D)  ​bar chart. 
A)  ​histogram. 
B)  ​stem-and-leaf display. 
C)  ​dot plot. 
D)  ​bar chart.

Question 16

The relative frequency of a class is computed by

Accepted Answer

A)  dividing the midpoint of the class by the sample size. 
B)  dividing the frequency of the class by the midpoint. 
C)  dividing the sample size by the frequency of the class. 
D)  dividing the frequency of the class by the sample size. 
A)  dividing the midpoint of the class by the sample size. 
B)  dividing the frequency of the class by the midpoint. 
C)  dividing the sample size by the frequency of the class. 
D)  dividing the frequency of the class by the sample size.

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. $$\begin{array}{l}
                                                      \text { Undergraduate Major }\
\begin{array} { l l l l l } 
\text { Graduate School } & \text { Business } & \text { Engineering } & \text { Others } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}
\end{array}$$   Of those students who are majoring in business, what percentage plans to go to graduate school?

Accepted Answer

A)  27.78 
B)  8.75 
C)  70.00 
D)  72.22 
A)  27.78 
B)  8.75 
C)  70.00 
D)  72.22

Question 18

​Which of the following types of data cannot be appropriately displayed by a histogram?

Accepted Answer

A)  Frequency 
B)  Relative frequency 
C)  ​Cumulative frequency 
D)  ​Percent frequency 
A)  Frequency 
B)  Relative frequency 
C)  ​Cumulative frequency 
D)  ​Percent frequency

Question 19

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 20

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). $$\begin{array} { l l l l l l } 
19 & 22 & 27 & 24 & 28 & 12 \
23 & 47 & 11 & 55 & 25 & 42 \
36 & 25 & 34 & 16 & 45 & 49 \
12 & 20 & 28 & 29 & 21 & 10 \
59 & 39 & 48 & 32 & 40 & 31
\end{array}$$ ​ 
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...

In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to

In a cumulative relative frequency distribution, the last class will have a cumulative relative frequency equal to

In a stem-and-leaf display,

A cumulative relative frequency distribution shows

Which of the following is least useful in making comparisons or showing the relationships of two variables?

A researcher is gathering data from four geographical areas designated: South =1; North = 2; East = 3; West = 4.The designated geographical regions represent?

Which of the following is not a recommended guideline for creating an effective graphical display?

The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to

The difference between the lower class limits of adjacent classes provides the

The total number of data items with a value less than the upper limit for the class is given by the

A graphical presentation of the relationship between two quantitative variables is

In quality control applications, bar charts are used to identify the most important causes of problems.When the bars are arranged in descending order of height from left to right with the most frequently occurring cause appearing first, the bar chart is called a

Data that provide labels or names for categories of like items are known as

A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a

The relative frequency of a class is computed by

Which of the following types of data cannot be appropriately displayed by a histogram?

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)

Data and Statistics

Descriptive Statistics: Numerical

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, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 2: Descriptive Statistics: Tabulargraphical

In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to

In a cumulative relative frequency distribution, the last class will have a cumulative relative frequency equal to

​In a stem-and-leaf display,

A cumulative relative frequency distribution shows

​Which of the following is least useful in making comparisons or showing the relationships of two variables?

A researcher is gathering data from four geographical areas designated: South =1; North = 2; East = 3; West = 4.The designated geographical regions represent?

Which of the following is not a recommended guideline for creating an effective graphical display?​

The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to​

The difference between the lower class limits of adjacent classes provides the

The total number of data items with a value less than the upper limit for the class is given by the

A graphical presentation of the relationship between two quantitative variables is​

In quality control applications, bar charts are used to identify the most important causes of problems.When the bars are arranged in descending order of height from left to right with the most frequently occurring cause appearing first, the bar chart is called a​

Data that provide labels or names for categories of like items are known as

​A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a

The relative frequency of a class is computed by

​Which of the following types of data cannot be appropriately displayed by a histogram?

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)

Data and Statistics

Descriptive Statistics: Numerical

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, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

In a stem-and-leaf display,

Which of the following is least useful in making comparisons or showing the relationships of two variables?

Which of the following is not a recommended guideline for creating an effective graphical display?

The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to

A graphical presentation of the relationship between two quantitative variables is

In quality control applications, bar charts are used to identify the most important causes of problems.When the bars are arranged in descending order of height from left to right with the most frequently occurring cause appearing first, the bar chart is called a

A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a

Which of the following types of data cannot be appropriately displayed by a histogram?