Recent content by startinallover

I'm doing a report on a set of lab data and am supposed to find the mean and mean's standard deviation \bar{x} + \sigma_{\bar{x}} The mean is given by \displaystyle{ \bar{x} = \sum_{i=1}^{N} w_{i} x_{i} } Where \displaystyle{ w_{i} = \left( \frac{\sigma}{\sigma_{i}} \right)^2...