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What information does the strength of a correlation coefficient convey?   #2.  S

What information does the strength of a correlation coefficient convey?   #2.  State whether each of the following is an example of a positive correlation or a negative correlation. Higher education level is associated with a larger annual income. Increased testosterone is associated with increased aggression. The smaller the class size, the more students believe they are receiving a quality education. Rising prices of apples are associated with the sale of fewer apples. #3.  Which is the predictor variable (X) and which is the criterion variable (Y) for each of the following examples? A researcher tests whether the size of an audience can predict the number of mistakes a student makes during a classroom presentation. A military officer tests whether the duration of an overseas tour can predict the morale among troops overseas. A social psychologist tests whether the size of a toy in cereal boxes can predict preferences for that cereal.

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