Standard Errors | Introduction to Data Science - University of …
https://dept.stat.lsa.umich.edu/~kshedden/introds/topics/standard_errors/
WEBThe standard error for \(\overline{\rm FEV}_{\rm s}\) alone is \(\sigma_{\rm s}/\sqrt{\rm n_s}\) , where \(\sigma_s\) is the standard deviation of FEV values for smokers. Similarly, the standard error for \(\overline{\rm FEV}_{\rm ns}\) alone is \(\sigma_{\rm ns}/\sqrt{n_{\rm ns}}\) , where \(\sigma_{\rm s}\) is the standard deviation of FEV ...
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