Researchers wondered whether the size of a person\'s brain was related to the in

Question

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 3 females and 3 males and measured their MRI counts and IQ scores. The data is reported on the right Treat the MRI count as the explanatory variable. Compute the linear correlation coefficient between MRI count and IQ for both the males and the females. Do you believe that MRI count and IQ are linearly related The linear correlation coefficient for females is . The linear correlation coefficient for males is . Are MRI count and IQ linearly related The linear correlation coefficient for females is close to so linear relation exists between MRI count and IQ for females. The linear correlation coefficient for males is close to so linear relation exists between MRI count and IQ for males.

Explanation / Answer

The linear correlation coefficient for females is close to 0, so no linear correlation exists between MRI and IQ for females. The linear correlation coefficient for males is close to 0, so no linear correlation exists between MRI and IQ for males.

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