what is stata statistic what model is chi2 used in stata what statistic has been reported as missing from stata why is an chi model statistic reported as missing in stata why is statistic reported as missing in stata how to find chi model statistic in stata which statistic is missing in stata stata statistical model statistic has been reported as missing? is chi2 statistic missing in stata what model does xtreg use chi statistic has been reported as missing in stata which statistic has been reported as missing in stata? statistical missing f or chi2 what is the statistic of chi2 in stata why is the statistic for the chi model reported as missing why does stata report statistic as missing what model can use the chi model how to find the stata statistic of the chi model what is f statistic in stata what is statistic missing for xtreg