Question 1

Car buyers were asked to indicate the car dealer they believed offered the best overall service. The four choices were Convoy Motors (C), Mako Chrysler (M), Torrent Auto (T), and Unequaled Chevrolet (U). The following data were obtained: $\begin{array} { l l l l l l l l l } 
T&C&C&C&U&C&M&T&C&U\
U&M&C&M&T&C&M&M&C&M\
T&C&C&T&U&M&M&C&C&T\
T&U&C&U&T&M&M&C&U&T
\end{array}$ What percentage of car buyers identified Convoy Motors as having the best overall service?

Accepted Answer

A) 1/4 = 0.25 or 25% 
B) 14/40 = 0.35 or 35% 
C) 14% 
D) None of these choices.

Question 2

The Chief of Police conducted a survey of the officers on his squad. An officer's shooting score at target practice is an example of a(n) ____________________ variable.

Accepted Answer

The answer of The Chief of Police conducted a survey...

Question 3

Bar and pie charts are graphical techniques for nominal data. The former focus the attention on the frequency of the occurrences of each category, and the later emphasizes the proportion of occurrences of each category.

Accepted Answer

A) True 
 B)False

Question 4

NARRBEGIN: Business Graduates
Business School Graduates
A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. $$\begin{array} { | l | l |} 
\hline \text { Major of Graduates } & \text { Number of graduates } \
\hline \text { Accounting } & 58 \
\text { Finance } & 42 \
\text { Manegement } & 38 \
\text { Marketing } & 52 \
\text { Other } & 10 \
\hline
\end{array}$$ NARREND
-{Business School Graduates Narrative} If you were only given the frequency bar chart below, would you able to reconstruct the original observations in the data set?

Accepted Answer

The answer of NARRBEGIN: Business Graduates
Business School Graduates
A sample of...

Question 5

From a pie chart you are able to find the frequency for each category.

Accepted Answer

A) True 
 B)False

Question 6

You cannot calculate and interpret differences between numbers assigned to nominal data.

Accepted Answer

A) True 
 B)False

Question 7

A(n) ____________________ distribution lists the categories of a nominal variable and the proportion with which each occurs.

Accepted Answer

The answer of A(n) ____________________ distribution lists the categories of...

Question 8

NARRBEGIN: All-Nighters
All-Nighters
A sample of 400 students at a certain university was taken after the midterm; 200 students reported staying up all night before the midterm and the other 200 students did not. Researchers recorded whether each student did well or poorly on the midterm. The following table contains the results. $$\begin{array} { | l | c | c | } 
\hline & \begin{array} { c } 
\text { Did Well on } \
\text { Midterm }
\end{array} & \begin{array} { c } 
\text { Did Poorly on } \
\text { Midterm }
\end{array} \
\hline \text { Stayed up all right } & 60 & 140 \
\text { Did not stay up all night } & 120 & 80 \
\hline
\end{array}$$ NARREND
-{All-Nighters Narrative} Briefly explain (using percentages) whether staying up all night before this midterm is related to a student doing poorly.

Accepted Answer

The answer of NARRBEGIN: All-Nighters
All-Nighters
A sample of 400 students at...

Question 9

NARRBEGIN: Business Graduates
Business School Graduates
A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. $$\begin{array} { | l | l |} 
\hline \text { Major of Graduates } & \text { Number of graduates } \
\hline \text { Accounting } & 58 \
\text { Finance } & 42 \
\text { Manegement } & 38 \
\text { Marketing } & 52 \
\text { Other } & 10 \
\hline
\end{array}$$ NARREND
-{Business School Graduates Narrative} How many graduates were surveyed?

Accepted Answer

The answer of NARRBEGIN: Business Graduates
Business School Graduates
A sample of...

Question 10

Identify the type of data for which each of the following graphs is appropriate.
a.Pie chart
b.Bar chart

Accepted Answer

The answer of Identify the type of data for which...

Question 11

For what type of data are frequencies the only calculations that can be done?

Accepted Answer

A) Interval data 
B) Nominal data 
C) Ordinal data 
D) None of these choices.

Question 12

NARRBEGIN: Business Graduates
Business School Graduates
A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. $$\begin{array} { | l | l |} 
\hline \text { Major of Graduates } & \text { Number of graduates } \
\hline \text { Accounting } & 58 \
\text { Finance } & 42 \
\text { Manegement } & 38 \
\text { Marketing } & 52 \
\text { Other } & 10 \
\hline
\end{array}$$ NARREND
-Suppose you measure the number of minutes it takes an employee to complete a task, where the maximum allowed time is 5 minutes, and each time is rounded to the nearest minute. Data from 130 employees is summarized below. Construct a frequency bar chart and a pie chart from this data. How long did it take most employees to complete the task?
 $$\begin{array} { | l | c c c c c | } 
\hline \text { Time (minutes) } & 1 & 2 & 3 & 4 & 5 \
\hline \text { Frequency } & 15 & 30 & 40 & 25 & 20 \
\hline
\end{array}$$

Accepted Answer

The answer of NARRBEGIN: Business Graduates
Business School Graduates
A sample of...

Question 13

In purchasing a used computer, there are a number of variables to consider. The age of the computer is an example of a(n) ____________________ variable.

Accepted Answer

The answer of In purchasing a used computer, there are...

Exam 2: Graphical Descriptive Techniques I

The Chief of Police conducted a survey of the officers on his squad. An officer's shooting score at target practice is an example of a(n) ____________________ variable.

Bar and pie charts are graphical techniques for nominal data. The former focus the attention on the frequency of the occurrences of each category, and the later emphasizes the proportion of occurrences of each category.

From a pie chart you are able to find the frequency for each category.

You cannot calculate and interpret differences between numbers assigned to nominal data.

A(n) ____________________ distribution lists the categories of a nominal variable and the proportion with which each occurs.

Identify the type of data for which each of the following graphs is appropriate. a.Pie chart b.Bar chart

For what type of data are frequencies the only calculations that can be done?

In purchasing a used computer, there are a number of variables to consider. The age of the computer is an example of a(n) ____________________ variable.