/sci/ - Science & Math » Thread #11002647

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Anonymous Wed 25 Sep 14:59:39 2019 No.11002647 View Reply Original Report

Quoted By: >>11002661

>forgot how to calculate variance
>entire test depends on figures derived from variance

Anonymous

Anonymous Wed 25 Sep 2019 15:06:34 No.11002658 Report

Quoted By: >>11002679

you can´t be this stupid

Anonymous

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Anonymous Wed 25 Sep 2019 15:07:11 No.11002661 Report

Quoted By:

>>11002647
>forgot how to calculate variance

Anonymous

Anonymous Wed 25 Sep 2019 15:18:37 No.11002679 Report

Quoted By: >>11002680 >>11002834

>>11002658
Idk if I am
The sum the of all x minus xbar, that quantity squared, all over n-1.
But when I did that it returned exactly the mean. What happen
Good gravy lads I do believe I squared n-1
Dropout time

Anonymous

Anonymous Wed 25 Sep 2019 15:19:40 No.11002680 Report

Quoted By: >>11002686 >>11002834

>>11002679
>it returned exactly the mean
then there is no variance

Anonymous

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Anonymous Wed 25 Sep 2019 15:22:52 No.11002686 Report

Quoted By: >>11002742

>>11002680
Kill me now

Anonymous

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Anonymous Wed 25 Sep 2019 15:24:07 No.11002687 Report

Quoted By: >>11002727 >>11002747

>Actually calculating variance
>Relying on Gaussian derived models

Anonymous

Anonymous Wed 25 Sep 2019 15:39:19 No.11002727 Report

Quoted By:

>>11002687
blocked

Anonymous

Anonymous Wed 25 Sep 2019 15:46:36 No.11002742 Report

Quoted By:

>>11002686
or the variance is as high as the mean. strange

Anonymous

Anonymous Wed 25 Sep 2019 15:47:44 No.11002747 Report

Quoted By:

>>11002687
Brainlet? Variance is used because it has nice analytical properties, nothing to do with the normal distribution.

Anonymous

Anonymous Wed 25 Sep 2019 16:21:24 No.11002834 Report

Quoted By:

>>11002680
>>11002679
You take the sum of the squares of the differences, not the square of the sum of the differences.
>>11002680
If there is no variance, then the variance will return 0. Obviously. Mean=variance is a characteristic of the Poisson distribution.

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