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thanks 4 ur help but problem is still there. when I use johanson cointegration by including this series (this time calculated through 2*lngdppc) I got a box indicating insufficient observations.

Hi, I'm working on panel data from 1980 to 2013 using eview 8. one of my variable has missing values for one cross sectional unit. I have 5 starting values then few values with gaps for different years and last five values. how ca I complete my series?
Thanks in advance.

I'm uploading my file here. my regression equ is lngini=lngdppc lngdppcs I want to estimate Johnson cointegration anf fully modified ols.

I have a panel of 340 observations. t=34 and N=10. the problem appear when I use log of GDP per capital series. without this variable estimation show no problem but I can't exclude this variable, I'm using eview 8.no observation of this series is missing.

Hi, I'm suffering with the issue that I got massage of insufficient no. of observations when I try to estimate a series that is log of square of another. I'm having balance panel data. how can I overcome this issue?