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Let the mean and variance of 8 numbers -10,; -7,; -1,; x,; y,; 9,; 2,; 16 be \dfrac72 and \dfrac2934, respectively. Then the mean of 4 numbers x,; y,; x+y+1,; |x-y| is: | Watch the step-by-step video solution for this NIMCET PYQ.