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Chapter 14Descriptive Statistics
Multiple-choice questions
1. Inferential statistics involve the use of _____________ to draw
conclusions about ________________.
a. populations; samples
* b. samples; populations
c. data sets; descriptive statistics
d. z-scores; normal distributions
2. The use of inferential statistics involves
a. examining the relationship between two variables.
b. randomly selecting participants from a population.
c. describing, summarizing, or explaining a set of data.
*d. using data from a sample to answer questions about a
population.
3. The use of descriptive statistics involves
*a. summarizing your data so that it is easier for others to
understand.
b. making inferences from your data to a population.
c. the use of both point and interval estimation.
d. sometimes include hypothesis testing.
4. SPSS is
a. measure of effect size.
b. a method of randomly selecting participants from a
population.
* c. a statistical software package commonly used by
psychologists.
d. used for inferential statistics but not descriptive.
5. A __________________ is a systematic arrangement of data values
in which the unique data values are rank ordered and the
frequencies are provided for each of these values.
, a. histogram
* b. frequency distribution
c. bar graph
d. frequency graph
Use the following frequency distribution to answer questions 6-10.
ACT ScoreFrequencyPercentage
20 2 10.0
21 3 15.0
22 4 20.0
23 6 30.0
24 3 15.0
25 2 10.0
6. Which of the following is the lowest score in the
frequency distribution?
a. 23
b. 10
* c. 20
d. 25
7. Which of the following is the highest score in the
frequency distribution? a. 23
b. 10
c. 20
* d. 25
8. What is the most frequently occurring score in the frequency
distribution?
* a. 23
b. 10
c. 20
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