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You can calculate standard deviation by addin the numbers of data that are together and dividing that number by the amount pieces of data.

THAT IS TOTALLY INCORRECT.

What was answered above was the calculation for getting an (mean) average.

If you take five numbers for example 1, 2, 3, 4, 5 then the (mean) average is 3.

But the standard deviation between them is 1.58814 and the variance is 2.5

Also the population std. deviation will be 1.41421 and the population variance will be 2.

see standard-deviation.appspot.com/

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Q: How To Calculate Standard Deviation?

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we calculate standard deviation to find the avg of the difference of all values from mean.,

Square the standard deviation and you will have the variance.

Standard deviation = square root of variance.

You need more than one number to calculate a standard deviation, so 9 does not have a standard deviation.

Standard deviation is how much a group deviates from the whole. In order to calculate standard deviation, you must know the mean.

You cannot because the standard deviation is not related to the median.

In the same way that you calculate mean and median that are greater than the standard deviation!

A z-score cannot help calculate standard deviation. In fact the very point of z-scores is to remove any contribution from the mean or standard deviation.

NO

to calculate standard deviation using pointers

=stdev(...) will return the N-1 weighted sample standard deviation. =stdevp(...) will return the N weighted population standard deviation.

You cannot calculate standard deviation for objects such as concrete cubes - you can only calculate standard deviation for some measure - such as side length, surface area, volume, mass, alkalinity or some other measure.

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