A researcher studied the relationship between the number of siblings (X) and intelligence (Y). The researcher...

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A researcher studied the relationship between the number of siblings (X) and intelligence (Y). The researcher...

A researcher studied the relationship between the number of siblings (X) and intelligence (Y). The researcher reported the following results of calculations: ∑[(X –Mx) (Y –MY)] = 100; SDx = 20; SDY = 20; SSX = 100; SSY = 100. What is the value of the Pearson correlation coefficient?

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