Measures of Central Tendency: Median

Median- the middle number in a set of data after the data have been arranged
eg. Median of 2, 5, 6, 8, 9 is 6
     Median of 1, 3, 6, 8, 9, 10 is 7
     Median of 6, 9, 13, 7, 8, 11 is 8 1/2