Evaluating professors and types of variables: Weinberg, Fleisher, and Hashimoto
ID: 3397013 • Letter: E
Question
Evaluating professors and types of variables: Weinberg, Fleisher, and Hashimoto (2007) studied almost 50,000 students' evaluations of their professors in almost 400 economics courses at The Ohio State University over a 10-year period.
One finding was that there was no statistically significant differences in average student evaluations among non-tenure-track lecturers, graduate student teaching associates, and tenure-track faculty members.
Which statistical test would the researchers have used for the above finding?
chi-square test for goodness-of-fit
chi-square test for independence
independent-samples t test
ANOVA
a.chi-square test for goodness-of-fit
b.chi-square test for independence
c.independent-samples t test
d.ANOVA
Explanation / Answer
chi-square test for goodness-of-fit
Reason:
•there can be more than two possible outcomes. Called multinomial.
•Measure a single categorical variable on each trial.
•Each person or trial falls into one of k mutually
exclusive categories.
•Null hypothesis specifies the probabilities of falling
into each of the k categories.
•Alternative hypothesis is that those are not all
correct.
chi-square test for goodness-of-fit
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