The mean of 9 numbers is 27. If two of the numbers, 94 and 163, are taken out of the set of 9 numbers, what will be the mean of the remaining 7 numbers?
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OK. The mean is 27 for 9 numbers, that means that the sum of the nine numbers is 243 (9X27).
If you subtract 94 and 163 from that sum, you will get the sum of the remaining 7 numbers.
Divide that sum by 7 to get the mean of the remaining 7 numbers.
If you subtract 94 and 163 from that sum, you will get the sum of the remaining 7 numbers.
Divide that sum by 7 to get the mean of the remaining 7 numbers.