the mean of 5 no. is 20.if one no. is excluded mean of the remaining no. becomes 23.find the excluded no.
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Answer:
mean = summation fixi /summation fi
20 = ∑fixi/5
∑fixi = 100
let x be the number subtracted
∑fixi - x/4 = 23
100-x=92
x=100 - 92
x = 8
Step-by-step explanation:
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