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EDCO 735 Statistics Week 1 Quiz and Answers

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EDCO 735 Statistics Week 1 Quiz and Answers

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EDCO 735 Statistics Week 1 Quiz and Answers

Which of the following is not necessary for causal inference? Correct Ans-external validity




Which of the following is not true about the standardization of scores Correct Ans-the
standard deviation always equals two




Nonexperimental studies tend to include: Correct Ans-assessment of the outcome variable




The degree to which a study's results can be replicated in real-world settings is: Correct
Ans-external validity




What kind of sampling involves every member of the population having an equal chance of
being selected? Correct Ans-random sampling




What percentage of scores are within two standard DEVIATIONS ABOVE AND BELOW THE
MEAN? Correct Ans-95.44




quasi-experimental design Correct Ans-tend to occur in natural settings




Which of the following is an example of a categorical variable? Correct Ans-hair color

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