Yeung Reported a Correlation of

question 26

Multiple Choice

Yeung reported a correlation of .70 between hours of exercise and self-reported stress-level in graduate students. Which of the following is an accurate statement regarding this finding?

• A) The two variables were unrelated in her study.
• B) As hours of exercise increased, stress generally increased.
• C) Her finding represents a moderate effect.
• D) Her results represent significant differences.

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Definitions:

Logistic Regression

A statistical method used for predicting a binary outcome from a set of independent variables.

Odds Ratio

A statistic that quantifies the strength of the association between two events, typically used in case-control studies.

Probability

A numerical expression ranging from 0 to 1 that indicates the probability of an event taking place.

Correlation Matrix

A table showing the correlation coefficients between sets of variables to summarize their mutual relationships.