Answer:
the median for the data set is 17
the mean is 20
Explanation:
to find the median you order the numbers from least to greatest and the number in the exact middle is the median
to find the mean you add all the numbers up and then divide it by how many numbers you are adding so for this one when you add all 7 numbers up you get a total of 140 but then you have to divide it by 7 because you added 7 numbers together to get that 140