How to Calculate Unbiasing Constant C4

V

virachakas

Hello All..

Does any one know how to calculate the unbiasing constant C4?? I haven't found a list with N > 100. Minitab shows till 100, Wikipedia shows an expression till the 10, but no formula for the rest of the points..

Can anybody help me??

**************Edit****************

I found the way in this post and it works: https://elsmar.com/elsmarqualityforum/threads/61481/

Thank you..
 
Last edited by a moderator:

Statistical Steven

Statistician
Leader
Super Moderator
Duncan's Quality COntrol and INdustrial Statistics text gives a formula for c4.

c4=sqrt(2/n-1)*[Gamma(n/2)/Gamma((n-1)/2)]

Hope that helps.

Steven

Hello All..

Does any one know how to calculate the unbiasing constant C4?? I haven't found a list with N > 100. Minitab shows till 100, Wikipedia shows an expression till the 10, but no formula for the rest of the points..

Can anybody help me??

**************Edit****************

I found the way in this post and it works: https://elsmar.com/elsmarqualityforum/threads/61481/

Thank you..
 
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