jjjj6666 发表于 2014-2-28 04:29
I don't know which command you use for f-test.
Taking an example, if based on reg, to bootstrap ...
有个问题请教您：单独做PPML回归的时候结果很好，单独通过bootstrap抽样并用reg回归的时候结果也挺好，但是用bootstrap抽样后再用ppml 回归，出现错误提示Number of regressors excluded to ensure that the estimates exist: 0Number of observations excluded: 0，这该如何处理？请您指教，多谢
jjjj6666 发表于 2014-2-28 04:29
I don't know which command you use for f-test.
Taking an example, if based on reg, to bootstrap ...
有个问题请教您：单独做PPML回归的时候结果很好，单独通过bootstrap抽样并用reg回归的时候结果也挺好，但是用bootstrap抽样后再用ppml 回归，出现错误提示Number of regressors excluded to ensure that the estimates exist: 0Number of observations excluded: 0，这该如何处理？请您指教，多谢
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