Understanding standard error of the mean 

Data are interpreted through mean (accuracy) and standard deviation (precision) as we have seen in previous videos. But there is one more parameter that we can use to estimate precision; standard error, more commonly called standard error of the mean. It's a quick and easy value to determine and is a very useful parameter, so here we look at how it's defined and how to calculate it. Oh, and I give you a handy shortcut to calculate it too.
Related videos;
Part 1: Accuracy and precision - • Are accuracy and preci...
Part 2: Central tendency (mean, median and mode) - • What are mean, median ...
Part 3: Standard deviation - • What is standard devia...
Part 5: Frequency distributions - • Demystifying frequency...
Hypothesis testing - Coming soon!
*The REALLY keen viewers among you will notice I say add the terms together when I describe the SEM equation and I should have said subtract ;) Trust me, the equation as presented in the video is correct!