MULTIPLE CHOICE
1. Which type of statistics is used to summarize large amounts of data so that they become more
meaningful and easier to communicate to others?
a. descriptive
b. inferential
c. nominal
d. ordinal
ANS: A DIF: Moderate REF: Module A.1 MSC: TYPE: Fact
2. Which type of statistics is used for decision-making, for generalizing from small samples, and for
drawing conclusions?
a. nominal
b. descriptive
c. inferential
d. ordinal
ANS: C DIF: Moderate REF: Module A.1 MSC: TYPE: Fact
3. Inferential statistics are used to
a. “boil down” numbers.
b. summarize numbers.
c. calculate measures of central tendency.
d. generalize from small samples.
ANS: D DIF: Difficult REF: Module A.1 MSC: TYPE: Fact
4. A psychologist concludes his method would be effective for teaching math to all third graders on the
basis of testing it on a selected group of third graders. He is making use of
a. descriptive statistics.
b. correlations.
c. inferential statistics.
d. z-scores.
ANS: C DIF: Difficult REF: Module A.1 MSC: TYPE: Application
5. Jan is summarizing numerical data by finding the mean, median, and mode for this set of data. She is
most likely using __________ statistics.
a. descriptive
b. ordinal
c. nominal
d. inferential
ANS: A DIF: Moderate REF: Module A.1 KEY: *, www
MSC: TYPE: Application
, Appendix: Behavioral Statistics
6. In order to make decisions regarding the best reading program to use, Hope will be generalizing from
the results of small samples of students. Hope is using __________ statistics
a. descriptive
b. ordinal
c. nominal
d. inferential
ANS: D DIF: Moderate REF: Module A.1 KEY: *
MSC: TYPE: Application
7. Regarding statistics, which of the following statements is FALSE?
a. Statistics help us draw valid conclusions about what we have observed.
b. Statistics bring greater clarity and precision to psychological thought and research.
c. There are two main types of statistics, which are frequency and graphical.
d. Psychologists use statistics because they often have to base decisions on a limited amount
of data.
ANS: C DIF: Moderate REF: Module A.1 KEY: *
MSC: TYPE: Concept
8. After administering a unit test to her psychology students, a college professor calculates the mean
and range for this test in order to better understand the performance of her students on the material
in this unit. This professor is using __________ statistics.
a. descriptive
b. inferential
c. nominal
d. ordinal
ANS: A DIF: Difficult REF: Module A.1 MSC: TYPE: Application
9. Descriptive statistics are helpful in doing all of the following EXCEPT
a. making numerical information more meaningful.
b. communicating numerical data to other people.
c. drawing conclusions from small samples.
d. summarizing large amounts of data.
ANS: C DIF: Moderate REF: Module A.1 MSC: TYPE: Concept
10. Graphical statistics, measures of central tendency, and measures of variability are the three basic
types of __________ statistics.
a. nominal
b. inferential
c. descriptive
d. ordinal
ANS: C DIF: Moderate REF: Module A.1 MSC: TYPE: Fact
A-42
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