BE-proff ● 2022-02-20 20:07 (589 d 21:34 ago) Posting: # 22798 Views: 1,700 |
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Hi All, One very general question that may be a little bit out of topic ![]() Let's say I have randomly generated set of 1 million values. ![]() What criterion should be used to check if the set has normal distribution? ![]() |
Helmut ★★★ ![]() ![]() Vienna, Austria, 2022-02-20 23:59 (589 d 17:42 ago) @ BE-proff Posting: # 22799 Views: 1,415 |
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Hi BE-proff, ❝ Let's say I have randomly generated set of 1 million values. Before we apply a statistical method, we have to understand the ![]() Therefore: How did you generate your data set? Obtained from RANDOM.ORG ? With a hardware random number generator? Software? If yes, which PRNG? In the last case, most software (even Excel since 2010) implement the Mersenne Twister, which is with its period of ≈4.3×106,001 fine for generating large data sets. However, in VBA still an LCG is implemented, which is bad for large data sets due to its shorter period.❝ What criterion should be used to check if the set has normal distribution? Look at the histogram first. ![]()
If in doubt, overlay it with a kernel density estimate.
— Dif-tor heh smusma 🖖🏼 Довге життя Україна! ![]() Helmut Schütz ![]() The quality of responses received is directly proportional to the quality of the question asked. 🚮 Science Quotes |
BE-proff ● 2022-02-21 15:42 (589 d 01:59 ago) @ Helmut Posting: # 22800 Views: 1,280 |
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Привет Helmut, Many thanks for clarification ![]() |
Helmut ★★★ ![]() ![]() Vienna, Austria, 2022-02-22 16:11 (588 d 01:29 ago) @ BE-proff Posting: # 22801 Views: 1,279 |
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Hi BE-proff, ❝ Many thanks for clarification Welcome.
See also there for further information. — Dif-tor heh smusma 🖖🏼 Довге життя Україна! ![]() Helmut Schütz ![]() The quality of responses received is directly proportional to the quality of the question asked. 🚮 Science Quotes |
Obinoscopy ★ USA, 2022-02-27 19:49 (582 d 21:52 ago) @ BE-proff Posting: # 22811 Views: 1,165 |
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❝ Let's say I have randomly generated set of 1 million values. ❝ ❝ What criterion should be used to check if the set has normal distribution? I don't think a randomly generated set of numbers would have a normal distribution. Every number should have an equal chance of been selected so I would say it should look more like a uniform distribution. But that is just my thinking.... — Scopy |