Dr. Beckworth is interested in the effects of tutoring on success in calculus. She also knows that gender is an important issue in math success, so she factors that in as a second independent variable.
She randomly assigns males and females to tutoring and no tutoring groups. She studies calculus success in the following four groups of participants: males who have received tutoring, females who have received tutoring, males who have not received tutoring, and females who have not received tutoring. What statistical test should she use to examine her results?
a. independent samples t test
b. t test for correlation coefficient
c. one-way analysis of variance
d. two-way analysis of variance
Question 2
A major advantage of the multiple-baseline design over the A-B-A design is that
a. participants do not know that they are being observed.
b. the treatment doesn't have to be effective in order to be studied.
c. it increases generalization of because it uses more than one participant.
d. it can be used when the effects of treatment are not reversible.
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