This typically means that
either some variable you think is numeric is really string
or some variable contains missing values, prohibiting some calculation.
We can't say more without knowing more about your data.
Nick
njcoxstata@gmail.com
On 8 April 2013 13:52, Rodrigo Badilla <rodrigo.badilla@gmail.com> wrote:
> I am triying to run a autocorrelation tests with xtserial command,
> lamentably only get this error output: "no observations" previously i
> set my data with xtset command, my data set have 386 samples.
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