Why You SHOULD Know MAD vs Sample Standard Deviation

Why you should know the difference between the mean absolute deviation and standard deviation. Both calculate the difference from the mean but in different ways.

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Mastering Mean Absolute Deviation (MAD):

How To Calculate The Sample Standard Deviation | Statistics:

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[Jie-rzhf]

Just to add to what you've said. The formula for the sample deviation you have is for the sample standard deviation. The one for population has just n in the denominator within the square root.