The overall test of the significance of the difference among groups in an analysis of variance is called
A) an omnibus test.
B) a planned comparison.
C) an absolute contrast.
D) a post-hoc test.
A
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Which of the following statements is true?
a. Research indicates group therapy is as effective as individual therapy. b. The 27% casualty rate in group therapies warns against their wide-spread use. c. Unlike individual therapy, premature termination is rare in therapy groups. d. Directive leaders produce more change than nondirective leaders. e. A Consumer Reports analysis indicated most people disliked group methods.
Ken is planning on studying the influence of intelligence on the ability to recall events from the 1960s. If Ken does not account for variables, such as age, that could also influence one's ability to recall these events, age could be considered a(n) ________ variable.
a) random b) dependent c) extraneous d) independent
Allie recycles and receives five cents for each can and bottle that she turns back in at the store. After several years of doing this, her state decides to cancel this program and no money is given for returned cans and bottles. Now that the program is cancelled, Allie is most likely to
A. recycle even more. B. use fewer cans and bottles. C. recycle the same as before. D. no longer recycle.
Darwin's idea of the survival of the fittest means that the organisms most likely to survive and breed are those that are
A) biggest and strongest. B) smallest and most agile. C) best adapted to their environments. D) most intelligent.