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standard deviation (1 Viewer)

poorjacky

Poor Jacky
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just wondering, is sample and population standard deviation in the syllabus, coz my txtbook doesnt have it, they just have standard deviation but then sample and population standard deviation came up in my skool's trial....
 

PC

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Answer is ... yes.

I can't think of a easy way to remember which is which. Standard deviation is sometimes called population deviation and is also sometimes called sample population deviation.

Most questions will state "standard deviation" and you'll be fine.

I think.
 

Roguedeth

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hmm thanks for reminding me i should start doing some distributions revision.
 

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