Last week I published a new statistics video on YouTube on How To... Calculate Student's t Statistic for Dependent (Paired) Samples - the method showed how to do the calculation manually step-by-step. There is of course an easier way to do this - use the Data Analysis Toolpak add-in that comes with Excel. The video below shows how to do this. I used the same data as for the manual method and the result is the same regardless of which method you use.