The classification of student class designation freshman sophomore, junior, senior is an example of

Defining and Collecting Data 1-1

CHAPTER 1: DEFINING AND COLLECTING DATA

1.Which of the following is a discrete quantitative (numerical) variable?

a) The Dow Jones Industrial average

b)The volume of water released from a dam

c)The distance you drove yesterday.

d)The number of employees of an insurance company

ANSWER:

d

TYPE: MC DIFFICULTY: Easy

KEYWORDS: discrete variable, types of data

2.Which of the following is a continuous quantitative (numerical) variable?

a)The color of a student’s eyes

b)The number of employees of an insurance company

c) The amount of milk in a 2-liter carton.

d)The number of gallons of milk sold at the local grocery store yesterday

ANSWER:

c

TYPE: MC DIFFICULTY: Easy

KEYWORDS: continuous variable, types of data

3.To monitor campus security, the campus police office is taking a survey of the number of

students in a parking lot each 30 minutes of a 24-hour period with the goal of determining when

patrols of the lot would serve the most students. If X is the number of students in the lot each

period of time, then X is an example of

a) a categorical variable.

b)a discrete variable.

c) a continuous variable.

d)a statistic.

ANSWER:

b

TYPE: MC DIFFICULTY: Moderate

KEYWORDS: discrete variable, types of data

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Question 7

Multiple Choice

The classification of student class designation (freshman,sophomore,junior,senior)is an example of a(n)

A)nominal random variable.
B)interval random variable.
C)ordinal random variable.
D)a parameter.

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What is the classification of student class designation?

Which type of data are the values arbitrary numbers?