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- 1$\begingroup$ Is it possible that last formula is giving the population standard error. $\sigma$ has no hat. $\hat{\sigma}$ would denote an estimated standard deviation, $\sigma$ could denote the population (true / unknown) standard error). $\endgroup$Paul Hewson– Paul Hewson2019-12-02 14:24:08 +00:00Commented Dec 2, 2019 at 14:24
- 1$\begingroup$ Please say more about where you found the second formula, with a link to it if possible. It looks like the formula for the standard error of the mean of $n$ observations rather than the standard error for a coefficient in linear regression. $\endgroup$EdM– EdM2019-12-02 14:55:07 +00:00Commented Dec 2, 2019 at 14:55
- 1$\begingroup$ @Edm yes, the second formula represents the standard error of the mean. I was wondering if there is any relation between the two. $\endgroup$Serge Kashlik– Serge Kashlik2019-12-02 14:59:48 +00:00Commented Dec 2, 2019 at 14:59
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