66
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It is 81.5, the number halfway between the two middle numbers.
The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.The square root of any number between 64 and 81.
70It is 11 more than 59 and 11 less than 81.To find the halfway point, add the two numbers and divide by 2.(59 + 81)/2 = 140/2 = 70
It is 80.5, the number halfway between them. Median means "half of the numbers are above and half are below". With only two numbers we just split the difference. In this case the Median and the Mean are the same number - but this is not always the case. If our numbers were 80, 80, 81, 83, the Median would still be 80.5 but the Mean would be 81.
64 and 81 ; 64 is 8 squared and 81 is 9 squared