Problem
Given the data set {7, 10, 12, 15, 18, 20, 25}, find the median.
Solution
Step 1 ：\(Step 1: \) Order the data set from least to greatest. We have {7, 10, 12, 15, 18, 20, 25}.
Step 2 ：\(Step 2: \) Since there are 7 numbers in the data set, the median is the 4th number, which is 15.
