My first talk of the year, and actually not on maths! @SciCafeCardiff is great for anyone who is just interested in science as a whole. Me and @walben_ali have both prepared very general talks, come along if you're interested!
@Dr_Evans_Maths Median: when you have outliers. Average money a person has for 5 people: £5, £5, £5, £5, £500000000000. In this case, the median is better
@Dr_Evans_Maths Mode: for categorical data, say favorite colours. If 10 people like red and 20 like yellow, then the favorite colour isn't yellowish red
@Dr_Evans_Maths But this is obviously to convince themselves that works using a calculator, the only way to have an airtight argument is with a formal proof