EViews.com

Hi all I am estimating an ordered logit model with two lags and when I try to estimate the model it produces an output with the coefficients but then just get N/A for the p-values etc. In the top part of the output it says the following: Warning: singular covariance, coefficients are not unique. Whe...

I'm not entirely sure. I'm used to working with time series data unfortunately and have never encountered such a problem. The message comes up after I click ok in the estimation window (with starting coefficent values set as eviews supplied). If I change the starting values to the zero option, then ...

Thanks so much, it worked!

Hi all I am estimating an ordered probit model, but it is giving me the following error message: non-positive liklihood value for observation 2006. Considering that I am using a panel and there are 308 different 2006 observation per variable, I don't know where to begin looking for the problem. Any ...

Hi all
I am running an ordered probit model with panel data and my dependent variable is the credit ratings of banks. I know that they need to be in integer form, eg 1, 2, 3 which would correspond with C, C/B and B for example but I am not sure how to create that series. Can anyone help? Thanks