A variable can have a confounding effect in a differential study only if
A) It affects the scores on the dependent variable(s).
B) There is no difference between the groups on the variable.
C) There are at least three groups in the study.
D) There are several levels of the variable in question.
Answer: A
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Which of the following measurement scales is accurately paired with an example?
a. Interval—rankings of tennis players b. Ratio—zip codes c. Nominal—test scores on an exam d. Ordinal—a professor listing his students from the best to worst
Amy is a faithful reader of the Houston Chronicle in the early 1900s. Which of the following opinions is she most likely to see in the Houston Chronicle?
a. Bars should be forced to close on Sunday afternoons. b. The policies of the Ku Klux Klan are beneficial to Texans. c. African Americans should be granted voting rights in Texas. d. The creation of the Port of Houston will be an economic disaster for Texas.
Sugar cane can be used to make fuel that is cleaner than fossil fuels, but results in water pollution
Indicate whether the statement is true or false.
The entire process of providing statutory authority for governmental activities and programs is called the
A) authorization process. B) appropriations process. C) fast-track process. D) legislative process. E) res judicata.