Delphi. Pearson criteria for testing normal distribution

Ok, Pearson criteria may be used for any distribution you like, but most popular is normal

theory from book “Econometrics” of Kochetkov and Tolokonnikov

Pearson criteria will help to understand if distribution in normal?

Below is example of testing…

Ok, this is the theory, lets write the algo which will answer the question – is distribution normal using Pearson Criteria ?

if needed approximation by params…

additional functions

table of quantiles from wicki

Helpful link

How much intervals to choose?

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