In the previous post, when repeated measures data from 10 subjects in 2 conditions were compared, it seemed that subjects who took drug 1 slept fewer hours compared to when they took drug 2. How might we test whether the median number of hours of sleep after drug 1 is less than after drug 2? We can calculate the difference

In the previous post we plotted repeated measures data from 10 subjects under 2 conditions. There are different ways to analyse small datasets. We could apply parametric methods to analyse the data values, such as describing the data with means and standard deviations, and calculating a paired difference. Or, we could also apply non-parametric methods by analysing data values based

Experimental studies are often based on relatively small samples. It is always better to test more subjects where possible, but even if the final dataset is comparatively small we should still strive to analyse the data properly. Let’s look at one way to analyse a small dataset. We will analyse data from the sleep dataset available in R. The sleep