Math, asked by basaksuchaity, 6 months ago

The mean and standard deviation of a data which is comprised of a set of ten positive numbers are 8 and 2 respectively .if the sum of squares of nine among the ten numbers is 599,what is the tenth number?

Answers

Answered by manaswimore9

1

Answer:

We know that S.D(ax+b)=∣a∣.S.D(x)

Here, a=−1,b=1

∴ Required standard deviation =∣−1∣×2.87=2.87

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