How to Calculate Unbiasing Constant C4

[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/Forums/showthread.php?t=61481

Thank you..

 

[Statistical Steven]

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/Forums/showthread.php?t=61481

Thank you..