Correlation and Twin Studies Rationale:  The purpose of this activity is to review two key concepts discussed in Chapter 9 that we will be referring to throughout the course: correlation and twin studies.  Instructions:  Read the questions below and provide your answer. A. Referring to the scatterplot below, indicate by circling the correct answer if the correlation is positive or negative.    POSITIVE NEGATIVE B. Explain in a sentence or two what the correlation in the graph means (what is going on with the relationship between the variables).  C.  Circle the strongest correlation from the choices below: .87 -.95 .02

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