Calculate the sample covariance of the following bivariate data set. (X Y 7 -7 12 10 5 12 ) table .b. Calculate the coefficient of correlation of the data set. 3.c. Describe in words the information...

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Extracted text: Calculate the sample covariance of the following bivariate data set. (X Y 7 -7 12 10 5 12 ) table .b. Calculate the coefficient of correlation of the data set. 3.c. Describe in words the information given to us by the sample covariance and by the sample correlation. Explain how the correlation gives us more precise information. 3.d. Explain why the covariance is not a good measure of the strength of the linear relationship between the two variables.