Monday, August 8, 2016

u/dat data's "Why medians > averages [OC] "

Unsettling. But I bet your students won't forget this example of why mean isn't always the best measure of central tendency.

While the reddit user labeled this as example median's superiority, you could also use this as an example when mode is useful. As statisticians, we often fall back on to mode when we have categories and median when we have outliers, but sometimes either median or mode can be useful when decimal points don't make a lot of sense.

Here is the image and commentary from reddit:

And this an IG posting about the data from the same user, Mona Chalabi from fivethirtyeight. I included the Instagram because Chalabi expands a bit more upon the original data she used.