A key statistical term, the standard deviation is that aspect of your data collection, that allows you to identify how your data correlates to each other. The standard deviation morphs from your worst mathematical nightmare, to becoming your statistical best friend. For those who take the time to carefully analyze it however, the equation eventually becomes harmless. The equation alone, for those who aren’t fans of basic calculus, is one that turns away many. In fact, many pray that they’ll never see it again. The first time any science or mathematics students hear the words standard deviation, it sounds daunting. Brief Tutorial: Standard Deviation MATLAB Introduction to Standard Deviation Theory.
To become familiar with the concept of the probability distribution of the sample mean.