When variances across groups are unequal, which of the following is not an appropriate course of action?
A. Use Welch’s F-ratio.
B. Use Games–Howell post hoc tests.
C. Transform the data.
D. Use Friedman’s ANOVA.
Answer: D
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In what part of the proposal should the writer represent current knowledge of the problem?
a. Design b. Methods c. Review of the literature d. Sampling e. Statement of the problem
As adolescents develop the ability to think hypothetically, they can
A. compare their real selves to their ideal selves. B. begin comparing themselves to others. C. better evaluate the things they have done in the past. D. construct a more accurate set of autobiographical memories.
Logical Positivism, seen in social sciences, has the following premise:
a. Discover the statistical probability on one reality and establish laws and theories about how it works. b. Maintain close contact with the researchers and the participants that are being studied. c. Use subjectivity by the researchers. d. All of these
What was the hypothesis being tested in this statistical analysis?
Below is text from a report of a consumer research study that used an independent samples t test. This research compared taste preferences for two different types of cookies: Brownie Batter and Chocolate. Consumers were randomly assigned to eat one of the two types of cookies, after which they rated it on a 1 (did not like it at all) to 5 (liked it a lot) range. Use this report to answer the question that follow it. An independent samples t test suggested that participants who ate brownie batter cookie (M = 3.73, SD = 1.19) equally as much as participants who ate a chocolate cookie (M = 4.25, SD = .39), t(18) = -1.32, p = .32, d = 0.59, 95% CI [-1.36, .31].