Median

The median is that value that separates the highest half of the sample from the lowest half. To find the median, arrange all the observations from lowest value to highest value and pick the middle one. If there are an even number of observations, take that average of the two middle values. When we use the median to describe what the observations have in common, there are several choices for a measure of variability, the range, the interquartile range, and the [absolute deviation]?. Since the median is the same as the second quartile, its calculation is illustrated in the article on quartiles.

back to summary statistics -- summarizing statistical data