Katlyn examined attitudes about a new portfolio assignment she included in her advanced graphics class. She felt this assignment might result in more positive attitudes in her male students than in her female students. She is concerned about extraneous variables and would like to control use ACT scores as a control Which of the following is the best control procedure?
a. Matching
b. T test analysis
c. Grouping variable analysis
d. Factorial analysis of variance
d
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Single parents come from different backgrounds and circumstances, but if you were to describe a typical single parent, this parent is likely to be ______.
a. a mother rather than a father b. someone who is unemployed c. someone who lives in poverty d. someone who was married at one point in time
Derek wants to make generalizations from the sample in his research study to a representative population. In order to do this he should use:
a. Random selection b. Random assignment c. Purposive sampling d. Stratified sampling
Based on the formula for the t-test for dependent means, what does the n represent?
a. sum of the means b. number of participants c. number of pairs of observations d. sum of all scores
The historical record is the
a. use of images to record history. b. a source for factual information. c. method to document history. d. combination of primary and secondary sources.