Question 1

Which of the following statements about pie charts is false?
A)A pie chart is a graphical representation of a relative frequency distribution.
B)You can always determine frequencies for each category by looking at a pie chart.
C)The total percentage of all the slices of a pie chart is 100%.
D)The area of a slice of a pie chart is the proportion of all the individuals that fall into that particular category.

Accepted Answer

It is not always possible to determine frequencies for each category just by looking at a pie chart. The size of the slices can be misleading if the categories have different sample sizes.

Question 2

Explain why religious preference is not an ordinal variable.

Accepted Answer

The answer of Explain why religious preference is not an...

Question 3

The Dean of Students conducted a survey on campus.The gender of each student is an example of a(n)____________________ variable.

Accepted Answer

The answer of The Dean of Students conducted a survey...

Question 4

In purchasing an automobile,there are a number of variables to consider.The body style of the car (sedan,coupe,wagon,etc.)is an example of a(n)____________________ variable.

Accepted Answer

The answer of In purchasing an automobile,there are a number...

Question 5

Before leaving a particular restaurant,customers are asked to respond to the questions listed below.For each question,determine whether the possible responses are interval,nominal,or ordinal.
a.What is the approximate distance (in miles)between this restaurant and your residence?
b.Have you ever eaten at this restaurant before?
c.On how many occasions have you eaten at the restaurant before?
d.Which of the following attributes of this restaurant do you find most attractive: service,prices,quality of the food,or the menu?
e.What is your overall rating of the restaurant: excellent,good,fair,or poor?

Accepted Answer

The answer of Before leaving a particular restaurant,customers are asked...

Question 6

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

Accepted Answer

A pie chart displays the relative sizes of data categories as sectors of a circle, showing percentages or proportions, but it does not directly provide the frequency (actual count) of each category unless the total number of observations is known.

Question 7

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 8

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

The statement accurately describes the differences between bar and pie charts in relation to nominal data.

Question 9

For each of the following examples,identify the data type as nominal,ordinal,or interval.
a.The final grade received by a student in a neuro-science class.
b.The number of students in a Physics course.
c.The starting salary of a PhD graduate.
d.The size of an order of fries (small,medium,large,super-size)purchased by a Burger King customer.
e.The college you are enrolled in (Arts and Sciences,Business,Education,etc.).

Accepted Answer

The answer of For each of the following examples,identify the...

Question 10

A relative frequency distribution lists the categories and their counts.

Accepted Answer

A relative frequency distribution lists the categories and the proportion or percentage of occurrences in each category.

Question 11

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 a...

Question 12

Provide one example of ordinal data; one example of nominal data; and one example of interval data.

Accepted Answer

The answer of Provide one example of ordinal data; one...

Question 13

Give an example of interval data that can also be treated as ordinal data and nominal data.

Accepted Answer

The answer of Give an example of interval data that...

Question 14

Explain the difference between ordinal data and interval data.

Accepted Answer

The answer of Explain the difference between ordinal data and...

Question 15

At the end of a safari,the tour guide asks the vacationers to respond to the questions listed below.For each question,determine whether the possible responses are interval,nominal,or ordinal.
a.How many safaris have you taken prior to this one?
b.Do you feel that your tour safari lasted sufficiently long (yes/no)?
c.Which of the following features of the accommodations did you find most attractive: location,facilities,room size,service,or price?
d.What is the maximum number of hours per day that you would like to spend traveling?
e.Is your overall rating of this safari: excellent,good,fair,or poor?

Accepted Answer

The answer of At the end of a safari,the tour...

Question 16

A bar chart is used to represent interval data.

Accepted Answer

A bar chart is used to represent categorical data, not interval data.

Question 17

The final grade received in a Literature course (A,B,C,D,or F)is an example of a(n)____________________ variable.

Accepted Answer

The answer of The final grade received in a Literature...

Question 18

The Dean of Students conducted a survey on campus.Class rank (Freshman,Sophomore,Junior,and Senior)is an example of a(n)____________________ variable.

Accepted Answer