Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 22 - 24 of 27

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Question 22

Statistical Procedures
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Question

MCQ▾

An experimenter computing the correlation between age and memory span may:

Choices

Choice (5)Response
a.Make an error because age and memory span are unrelated.
b.Be able to show a relationship between age and memory span.
c.Be able to prove that a decrease in memory produces old age.
d.Be able to show that old age caused a decrease in memory span.
e.Be able to determine that a third variable was involved.

Question 23

Statistical Procedures
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Question

MCQ▾

Julian computed the Pearson Product Moment Correlation Coefficient for a set of data and found that r =+1.80. Without knowing more about the study, we can say that________.

Choices

Choice (5)Response
a.There is a low negative relationship between the two measures.
b.Julian has confirmed the hypothesis.
c.Julian made an error in his calculation.
d.One measure reliability predicts the other measure.
e.There is a high, positive relationship between the two measures used in the study.

Question 24

Statistical Procedures
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Question

MCQ▾

If SAT scores and college grades during the first year are positively correlated because both are related to how much a student learned in high school, this would represent the ________.

Choices

Choice (5)Response
a.Strength of one’s ability to draw causal inferences from correlations.
b.Bidirectionality problem with causal inferences from correlations.
c.Inverse relationship problem with correlations.
d.Third variable problem with causal inferences from correlations.
e.Question does not provide sufficient data or is vague