Subject: Standard Deviation

Name: Shelly

Who is asking: Student

Level: Secondary

Question: Is there a way to compare means and standard deviations that come from different size samples? Is there an equation that can normalize sample size?

Thank you!

Hi Shelly,

Yes, there are many method of comparision two means or two standaed deviations. We have to careful to determine if the two populations are dependent or not. You can find formulas in any standard statistics text book if you look for the terms::

differences between sample means,
paird test for dependent (mached pairs) populations,
polled estimators

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