Consider the following set of data.
(18, 15), (31, 55), (63, 27), (82, 24), (109, 58), (118,14)
(a) Calculate the covariance of the set of data. (Give your answercorrect to two decimal places.)
(b) Calculate the standard deviation of the six x-valuesand the standard deviation of the six y-values. (Give youranswers correct to three decimal places.)
(c) Calculate r, the coefficient of linear correlation,for the data in part (a). (Give your answer correct to two decimalplaces.)
