[thesite] how many ratings to appear in sidebar?

Martin martin at members.evolt.org
Wed Jan 23 18:07:20 CST 2002

On Tuesday, January 22, 2002, at 03:21  pm, Luther, Ron wrote:

> Just a quick note ... If you do a 'trim mean' ... just be sure that you
> trim both tails ... E.g. For a "10% trim mean" you throw out the 5%
> lowest scores *and* the 5% highest scores ... it's a 'balance' thing.

Yup. Or more accurately, throw out anything more than 2 Standard
Deviations from the mean.

Which means that if you have a bunch of ratings at one end
(say 4s and 5s) and there's 1 sitting at 1, that's the one that
goes, as the 4s and 5s aren't outliers. But the same function
should be able to cope with the opposite case, where a
5 is an outlier to ratings clustered around 1 and 2

Not had time to look up the exact calculations, sorry. Does
CF provide any stats functions out of the box? Or are there
custom tags/functions someone's prebuilt?

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