probability plot - weibull
03-10-2018, 11:44 PM (This post was last modified: 03-10-2018 11:50 PM by Marcus_W.)
Post: #4
 Marcus_W Junior Member Posts: 3 Joined: Mar 2018
RE: probability plot - weibull
Hey,

I think I found a solution, based on this:
http://www.real-statistics.com/distribut...egression/

I am not so good in coding, but maybe there is someone how can use this:

Code:
 LOCAL len :=0; LOCAL n :=0; LOCAL param := 0; LOCAL beta := 0; LOCAL lambda := 0; LOCAL value := 0; EXPORT weibull_ifitr(data,percent) BEGIN C1:=data; len:=length(C1); C2:=sort(C1); C3:=ln(C2); FOR n FROM 1 TO len DO C4(n):=(n-0.5)/len; END; C5:=ln(-ln(1-C4)); param:=linear_regression(C3,C5); beta:=param(1); lambda:=e^(-param(2)/param(1)); value:=weibull_icdf(beta,lambda,percent); RETURN value; END;

Comments are welcome.

bye,
Marcus
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 Messages In This Thread probability plot - weibull - Marcus_W - 03-09-2018, 08:26 PM RE: probability plot - weibull - parisse - 03-10-2018, 07:11 AM RE: probability plot - weibull - Marcus_W - 03-10-2018, 01:07 PM RE: probability plot - weibull - Marcus_W - 03-10-2018 11:44 PM

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