Test Bank for Introduction to Probability and Statistics, 15th Edition by William Mendenhall
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Course
Introduction to Statistics
Institution
Introduction To Statistics
Test Bank for Introduction to Probability and Statistics 15e 15th Edition by William Mendenhall, Robert J. Beaver/Barbara M. Beaver. Full Chapters test bank included
Chapter 1: Describing Data with Graphs
1.1 Variables and Data
Types of Variables
Exercises
1.2 Graphs for Categorical Data
Ex...
1. A variable is a characteristic that changes or varies over time, and/or for different individuals or objects under
consideration. An experimental unit is the individual or object on which a variable is measured.
a. True
b. False
ANSWER: True
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/4/2019 3:06 AM
DATE MODIFIED: 2/4/2019 3:06 AM
2. Bar and pie charts are graphical techniques for qualitative data. The former focus the attention on the
frequency of the occurrences of the categories, and the later emphasize the percentage of occurrences of each
category.
a. True
b. False
ANSWER: True
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/4/2019 3:06 AM
DATE MODIFIED: 2/4/2019 3:06 AM
3. In a sample of 1000 students in a university, 125 of them or 12.5% are biology majors. The 12.5% is an
example of statistical inference.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/4/2019 3:06 AM
DATE MODIFIED: 2/4/2019 3:06 AM
4. Individual observations within each class may be found in a frequency distribution.
a. True
b. False
ANSWER: False
POINTS: 1
QUESTION TYPE: True / False
HAS VARIABLES: False
DATE CREATED: 2/4/2019 3:06 AM
DATE MODIFIED: 2/4/2019 3:06 AM
5. Twenty-five percent of a sample of 200 professional tennis players indicated that their parents did not play
. Page 1
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