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Question

If the mean of x, y, z is y, then mean of x and z is ________.

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Solution


It is given that the mean of x, y, z is y.

x+y+z3=y Mean=Sum of observationsTotal number of observationsx+y+z=3yx+z=3y-y=2y .....1

Mean of x and z =x+z2=2y2=y [Using (1)]

If the mean of x, y, z is y, then mean of x and z is ____y____.

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