Find the mean: y-2a, y-a, y, y + a, y + 2a


Given values

y-2a, y-a, y, y+a, y+2a

The mean of the numbers can be calculated using the formula

Mean = Sum of the observations/ Number of observations

From the above given value let us calculate the sum of the observations

Sum of the observations = y – 2a + y – a + y + y + a + y + 2a

Sum of the observations = 5y +3a – 3a

Sum of the observations = 5y

Number of observations = 5

Put the values in the mean equation we get

Mean = 5y/5

Mean = y

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