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Dear Lazar

I hope you are well, I am trying to do Multi group comparisons using Lisrel but I keep receiving the following error, Can you kindly assist.

W_A_R_N_I_N_G: Matrix to be analyzed is not positive definite,
ridge option taken with ridge constant = 10.000
I thank you Dason,

I have like this in the rmse formula .....(yi-xi)^2
yi=?
xi=?
if we have the xi estimator for example i/n
what about:
yi=? probability p or frequency or f(v) or F(v) ???????
have you an example plz?
plz i want an example how calculate rmse to compare methods to analyze wind speed
Dason
Dason
Take your wind speed then calculate the root mean square error based on it. Boom and you're doing