Knowing when and how to choose the right statistical hypothesis test is no mean feat. It can take years of learning and practice before you get comfortable with it. Fortunately, there are ways to shortcut this by having a process, a strategy and a nice, big diagram! Here I’m going to give you all three!Getting StartedI think…
When it comes to storytelling, we have a problem. It’s not our fault though – as human beings we are hard-wired from birth to look for patterns and explain why they happen. This problem doesn’t go away when we grow up though, it becomes worse the more intelligent we think we are. We convince ourselves that now…
I’m sure you all know how to do a correlation analysis to test if one variable is related to another. You probably even know when to use a Spearman correlation test over a Pearson correlation test. But did you know that the answers from these tests are probably wrong? When you have a pair of variables, finding a statistical…
How many times have you heard that ‘correlation is not causation’? Many times, I’m sure. So you know not to say things like ‘wow, the correlation between A and B has a p-value of 0.000001 so A must be causing B…’. I wish I had a pound for every time a very experienced, intelligent scientist with PhDs…
I blame Florence Nightingale. Really, I do. She publishes one little pie chart and suddenly we’re all expected to be statisticians. Gone are the days when a scientist can collect their data, then simply hand it over to a statistician for analysis and return in 6 months for the results. Oh no, now we all have…
PART 1: 2×2 TablesEver been deceived by stats? In this new series ‘How to Lie With Stats (and get away with it)’ we teach you the tools of the trade of the statistical conmen so you’ll be better able to spot when someone is trying to con you. Ready? OK, let’s go… Continue Reading