Question 1

One disadvantage of pie charts is that it is difficult to visually compare 2 frequency distributions.Plotting
relative frequency distributions (polygons or ogives) on the same axes is usually more informative.

Accepted Answer

A) True 
 B)False

Question 2

When data are collected in original form, they are called __________.
________________________________________

Accepted Answer

The answer of When data are collected in original form,...

Question 3

An automobile dealer wants to construct a pie graph to represent types of cars sold in July.He sold 72 cars; 16 of which were convertibles.The convertibles will represent how many degrees in the circle?

Accepted Answer

A)  60°
B)  80°
C)  100°
D)  50°E) A) and B)
F) B) and D)

Question 4

Which type of graph represents the data by using vertical bars of various heights to indicate frequencies?

Accepted Answer

A)  ogive
B)  frequency polygon
C)  histogram
D)  cumulative frequencyE) B) and C)
F) A) and D)

Question 5

Pareto charts have units that are used for the frequency that are

Accepted Answer

A)  decreasing in size.
B)  increasing in size.
C)  equal in size.
D)  proportional in size.E) All of the above
F) None of the above

Question 6

The total frequency of the data whose ogive shown below  is approximately

Accepted Answer

A)  12
B)  18
C)  34
D)  90E) B) and D)
F) None of the above

Question 7

A __________ would most appropriately represent the yearly-number of students that were enrolled in
Statistics over the past ten years.
________________________________________

Accepted Answer

The answer of A __________ would most appropriately represent the...

Question 8

A stem and leaf plot is a data plot that uses part of a data value as the stem and part of the data value as
the leaf to form groups or classes.

Accepted Answer

A) True 
 B)False

Question 9

An ogive graph is also called a cumulative frequency graph.

Accepted Answer

A) True 
 B)False

Question 10

For the class 10-18, the upper class limit is

Accepted Answer

A)  9
B)  10
C)  18
D)  19E) A) and D)
F) None of the above

Question 11

Find the class with the least number of data values.

Accepted Answer

A)  70
B)  90
C)  60
D)  40E) A) and C)
F) B) and D)

Question 12

A time series graph is useful for detecting long term trends over a period of time.

Accepted Answer

A) True 
 B)False

Question 13

A pie graph was created showing the number of children per family.If 234 families were in the survey
and the section depicting families with three children represented 120°, the number of families with three
children was 78.

Accepted Answer

A) True 
 B)False

Question 14

The larger the sample size, the larger the relative frequencies.

Accepted Answer

A) True 
 B)False

Question 15

Construct a Pareto chart for the following distribution:

Accepted Answer

Sorted in the order ...

Question 16

In the figure below, what class boundary has 30% of the data?

Accepted Answer

A)  0.5-20.5
B)  20.5-40.5
C)  40.5-60.5
D)  60.5-80.5E) B) and C)
F) A) and B)

Question 17

Choose the correct statement describing the following stem and leaf plot for grades on a linear algebra exam.

Accepted Answer

A)  The range of the grades is between 23 and 98.
B)  Of the 29 students who took the exam, nine scored between 80 and 89.
C)  There are no gaps in the data.
D)  The data is bimodal.E) C) and D)
F) A) and B)

Question 18

In order to graphically compare two frequency distributions, one should use relative frequency
distributions in order to take differing sample sizes into account.

Accepted Answer

A) True 
 B)False

Question 19

A Pareto chart does not have which of the following properties?

Accepted Answer

A)  It is a bar chart
B)  The frequencies are arranged from highest to lowest
C)  The frequencies are arranged from lowest to highest
D)  It is used to represent categorical dataE) B) and D)
F) All of the above

Question 20

The following information shows the colours of cars preferred by customers.Draw
a pie graph and indicate how many degrees the black represents in a pie graph?

Accepted Answer

The answer of The following information shows the colours of...

Exam 2: Frequency Distributions and Graphs

In order to graphically compare two frequency distributions, one should use relative frequency distributions in order to take differing sample sizes into account.

Correct AnswerverifiedShow Answer

Construct a Pareto chart for the following distribution:

Correct AnswerverifiedSorted in the order ...View AnswerShow Answer

An ogive graph is also called a cumulative frequency graph.

Correct AnswerverifiedShow Answer

A stem and leaf plot is a data plot that uses part of a data value as the stem and part of the data value as the leaf to form groups or classes.

Correct AnswerverifiedShow Answer

Pareto charts have units that are used for the frequency that are

Correct AnswerverifiedShow Answer

A Pareto chart does not have which of the following properties?

Correct AnswerverifiedShow Answer

A time series graph is useful for detecting long term trends over a period of time.

Correct AnswerverifiedShow Answer

An automobile dealer wants to construct a pie graph to represent types of cars sold in July.He sold 72 cars; 16 of which were convertibles.The convertibles will represent how many degrees in the circle?

Correct AnswerverifiedShow Answer

In the figure below, what class boundary has 30% of the data?

Correct AnswerverifiedShow Answer

A __________ would most appropriately represent the yearly-number of students that were enrolled in Statistics over the past ten years. ________________________________________

Correct AnswerverifiedShow Answer

For the class 10-18, the upper class limit is

Correct AnswerverifiedShow Answer

The larger the sample size, the larger the relative frequencies.

Correct AnswerverifiedShow Answer

A pie graph was created showing the number of children per family.If 234 families were in the survey and the section depicting families with three children represented 120°, the number of families with three children was 78.

Correct AnswerverifiedShow Answer

The total frequency of the data whose ogive shown below is approximately

Correct AnswerverifiedShow Answer

When data are collected in original form, they are called __________. ________________________________________

Correct AnswerverifiedShow Answer

Find the class with the least number of data values.

Correct AnswerverifiedShow Answer

The following information shows the colours of cars preferred by customers.Draw a pie graph and indicate how many degrees the black represents in a pie graph?

Correct AnswerverifiedShow Answer

Which type of graph represents the data by using vertical bars of various heights to indicate frequencies?

Correct AnswerverifiedShow Answer

Choose the correct statement describing the following stem and leaf plot for grades on a linear algebra exam.

Correct AnswerverifiedShow Answer

One disadvantage of pie charts is that it is difficult to visually compare 2 frequency distributions.Plotting relative frequency distributions (polygons or ogives) on the same axes is usually more informative.

Correct AnswerverifiedShow Answer

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Sorted in the order ...
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A would most appropriately represent the yearly-number of students that were enrolled in Statistics over the past ten years. ______________________________

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When data are collected in original form, they are called . ______________________________

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