In the mid-1800s, the Austrian monk Gregor Mendel conducted a series of simple experiments of cross-pollination of pea plants, which increased our understanding of genetics.
Answer the following statement true (T) or false (F)
True
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A set of 10 scores has SS = 90 . If the scores are a sample, the sample variance is ____, and if the scores are a population, the population variance is ____
a. s2 = 9; ?2 = 9 c. s2 = 10; ?2 = 9 b. s2 = 9; ?2 = 10 d. s2 = 10; ?2 = 10
The use of a test yielding a DQ over a test yielding an IQ is most appropriate when you are assessing
a. infants. b. preschoolers. c. adolescents. d. the elderly.
During the 20th century, psychological approaches to treatment reflected the rise of the ____ perspectives
a. ?psychodynamic and cognitive b. ?functionalist and Gestaltist c. ?structuralist and empiricist d. ?behavioral and humanist
A researcher develops a 20-question test to measure anxiety and administers it to a group of participants. To evaluate the reliability of the test, the researcher computes a score for the first 10 questions and a score for the last 10 questions for each participant and then computes the correlation between the two scores. What is the researcher measuring?
a. split-half reliability b. internal reliability c. test-retest reliability d. inter-rater reliability