Answer:To find the median of the data set, follow these steps:1. Organize the data in ascending order: 6, 8, 10, 10, 11, 12, 12, 15, 16, 16, 17, 18, 18, 20, 21, 21, 23, 24, 24, 24, 29, 30, 31, 32, 32, 32, 35, 36, 39, 402. Count the number of values: There are 30 values in total.3. Find the median: Since there is an even number of values (30), the median is the average of the two middle numbers, which are the 15th and 16th values.15th value: 2116th value: 214. Calculate the median: Median = 21 + 21 ----------- = 42/2 = 21 2Thus, the median of the data set is 21.