Post hoc comparisons are used in one-way ANOVA to compare all the possible
a. pairs of sample variances from different levels of a factor to determine which are significantly different from each other.
b. pairs of sample means from different levels of a factor to determine which are significantly different from each other.
c. variances to each other.
d. pairs of sample means from different factors to determine whether they are significantly different from each other.
Question 2Which of the following is one of the requirements for using a one-way, between-subjects ANOVA?
a. The means of the populations represented are homogeneous.
b. The populations represented have significantly different variances.
c. Each sample represents a normally distributed population of nominal or ordinal scores.
d. The scores in each condition are independent samples.
Question 3Analysis of variance is the most common inferential statistical procedure used to analyze experiments because
a. 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.
b. it is the only statistical procedure that can test either between-subjects factors or within-subjects factors.
c. there are several different versions of it, and so it can test for possible treatment effects more accurately than the two-sample tests.
d. there are several different versions of it, and so it can be used with many different designs.
Question 4The term condition matches which of the following ANOVA terms?
a. Factor
b. Mean square
c. Treatment effect
d. Level
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