The mean is the average of all the numbers so 29+23+27+23+31+29=139. Divide the answer by the amount of numbers, 139 divided by 6 = 23.1 but we round so the answer is A. 21
First, put all the numbers in order. That would be... 23, 23, 27, 29, 29, 31. Then, find the middle number. Here, there are two in the middl: 27 and 29. So we need to find the average of the two numbers. 27 + 29 = 56. 56 divided by 2 = 28. The average of the two numbers and, consequently the median, is 28. Hope it helps! :)
