Error of kurtosis and skew

ROOT
1

Hi ROOTusers,

Could anyone help me, how to get error of Kurtosis and skewness of a histogram ?

like for error of mean we use

histo->GetMeanError();

for kurtosis and skewness
there is GetKurtosis(), GetSkewness().

there is no option to get error of it .

Is there any way to Get these ?

Thank you

Regards,

2

Hi,
you can get the errors on the kurtosis and the skewness on the x axis by calling
h1->GetSkewness(11);
h1->GetKurtosis(11);

see root.cern.ch/root/htmldoc/TH1.ht … etSkewness

However, the value of skewness and kurtosis (in contrast to the standard deviation) are computed using the bin centers. The values obtained could be then biased by a value which is not taken into account in these formulas.

Best Regards

Lorenzo

3

Hello Lorenzo,

Sorry for replying late.

Thank you for giving information.

With Best Regards,