An experimenter studies the effect of type of music during practice on recall of word lists using rock background music for 20 subjects, classical music for 22 others, and country/western for another 25 . What kind of experimental design is this?
a. One-way, between-subjects c. Two-sample, between-subjects
b. One-way, within-subjects d. Two-sample, within-subjects
Question 2
Analysis of variance is the most common inferential statistical procedure used to analyze experiments because
a. it is the only statistical procedure that can test either between-subjects factors or within-subjects factors.
b. there are several different versions of it, and so it can test for possible treatment effects more accurately than the two-sample tests.
c. most researchers are more interested in whether there are differences in the variance among the conditions than in whether there are differences in the means.
d. there are several different versions of it, and so it can be used with many different experimental designs.
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