Quantitative Data Analysis Hypothesis
Testing Exam Questions and Answers
Regression analysis is used when the dependent variable is nominal or ordinal in
nature. - ANSWER-False
When you want to test if the average score of an exam significantly differs from 7.3 (the
average score of last year), an independent samples t-test is most appropriate. -
ANSWER-False
A researcher wants to know if the distribution of income in his sample corresponds to
the real distribution in his population (60% < the standard, 40% >= above the standard).
Which of the following tests could he use for this?
1) An independent samples t-test.
2) ANOVA.
3) A paired-samples t-test.
4) A Chi-square test. - ANSWER-Chi-Square Test
Regression analysis is used when the independent variable is nominal or ordinal in
nature. - ANSWER-True
A researcher want to test if a cause-effect relationships exists between someone's age
and the number of hours of sleep someone needs. She measures age as follows:
0 < 20 years.
0 20 - 50 years.
0 > 50 years.
Furthermore, participant of the research can fill in the number of hours they sleep on
average in a day on a dotted line.
Which test could best be used to test the hypothesis that age influences the number of
hours someone sleeps?
1) A independent samples t-test.
2) A paired samples t-test.
3) ANOVA.
4) Discriminant analysis. - ANSWER-ANOVA
A Type II error, also referred to as beta (b), is the probability of rejecting the null
hypothesis when it is actually true. - ANSWER-False
The most appropriate way to test if social class influences the political party for which
people vote is regression-analysis. - ANSWER-False