We want to predict a person's happiness from the following variables: degree of optimism, success in school, and number of close friends. What type of statistical test can tell us whether these variables predict a person's happiness?
a. factorial ANOVA
b. multiple comparison
c. regression
d. multiple regression
D
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When a researcher can be confident that experimental effects are actually caused by the independent variables and not some other uncontrolled factors, we say the experiment is high in
a. internal validity b. random assignment c. external validity d. real-world applicability
Stimulus motives differ from biological motives in that stimulus motives
a. are innate and necessary for survival. b. appear to be innate, but are not necessary for survival. c. are acquired through various forms of conditioning and learning. d. include needs for security, status, approval, and achievement.
Currently, more than half of Peace Corps volunteers serve in __________
a) Asia b) Africa c) the Americas d) Europe
What is a disadvantage of experimental design?
What will be an ideal response?