Statistics & Probability
Basic
Median
The middle value separating the higher and lower halves.
Formula
Variables
x_iOrdered data values
Example
For 3, 1, 4, 1, 5 sorted to 1, 1, 3, 4, 5, the median is the middle value, 3.
Did You Know?
The median resists outliers: one billionaire walking into a room barely moves it, but wrecks the mean.