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Chapter 22 Using Statistics to Describe Variables

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Chapter 22 Using Statistics to Describe Variables

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  • November 27, 2024
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Chapter 22: Using Statistics to Describe Variables
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MULTIPLE CHOICE


1. The following is the frequency distribution for a set of data. What is the set’s mode?
X f
5 1
4 0
3 2
2 3
1 1

a. 5
b. 4
c. 3
d. 1
ANS: C
The measures of central tendency are mode, median (MD), and mean ( ). The mode is the
numerical value or score that occurs with the greatest frequency in a data set. It does not
necessarily indicate the center of the data set.


DIF: Cognitive Level: Analysis REF: Page 555



2. In the data set below, what is the mean ( )?
X f
5 4
4 2
3 1
2 1
1 2

a. 4
b. 3.5
c. 3
d. 2.5
ANS: B




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, The measures of central tendency are mode, median (MD), and mean ( ). The mean is the
arithmetic average of all a variable’s values in a study and is the most commonly reported
measure of central tendency. The mean is the sum of the scores divided by the number of
scores being summed. Mean ( )= ÷ N = 35 ÷ 10 = 3.5.


DIF: Cognitive Level: Analysis REF: Page 555




Downloaded by: Ariah | abbieclin@gmail.com
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