What is the variance of the following data? If necessary, round your answer to two decimal places.
23, 50, 49, 48, 49, 32, 37, 40, 41, 42, 41, 41, 43

Question

What is the variance of the following data? If necessary, round your answer to two decimal places.
23, 50, 49, 48, 49, 32, 37, 40, 41, 42, 41, 41, 43

anonymous · Answer

To find the variance, first find the mean.

anonymous · Answer

mean is 1736

amistre64 · Answer

the mean HAS to be between 20 and 50

anonymous · Answer

Then subtract the mean from each of the numbers. For example:     23 - mean. 
And be careful because mean = all the numbers added together / the amount of numbers

amistre64 · Answer

if it must be done without a calculator, you can subtract a random amount from each data point and work the smaller set as well

anonymous · Answer

536 / 13 = 41.23     (rounded) 
You would subtract this number from each number listed, then square it. It's a long process.

anonymous · Answer

There are also no negatives after you square the numbers.