Question
Two random variables x and y have the following
regression equations - 3x + 2y – 26 = 0 6x + y – 31 = 0 then, the mean values of x and y are respectively:Solution
3x + 2y – 26 = 0 6x + y – 31 = 0 The means of X and Y will satisfy the above two equations. So, solving the above two equations we get, Xbar = 4 Ybar = 7
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