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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Related Questions
Q2:
Your age group (1-9; 10-19; 20-29; 30-39; etc.)is an interval variable.
Q3:
Whether or not you are over the age of 21 is a nominal variable.
Q4:
With nominal data,there is one and only one way the possible values can be ordered.
Q5:
The classification of student major (accounting,economics,management,marketing,other)is an example of a(n) A)nominal random variable. B)interval random variable. C)continuous random variable. D)parameter.
Q6:
A researcher wishes to estimate the textbook costs of first-year students at Barry University.To do so,he recorded the textbook cost of 300 first-year students and found that their average textbook cost was $195 per semester.The variable of interest to the researcher is A)textbook cost. B)class rank. C)number of students. D)name of university.
Q8:
For what type of data are frequencies the only calculations that can be done? A)Interval data B)Nominal data C)Ordinal data D)None of these choices.
Q9:
All calculations are permitted on interval data.
Q10:
Nominal data are also called qualitative or categorical.
Q11:
Your gender is a nominal variable.
Q12:
A variable is some characteristic of a population or sample.