Find the mean of the following data set:

25, 30, 20, 20, 25, 35, 35, 10


a. 15
b. 20
c. 25
d. 30

My Answer:

b. 20

http://www.mathsisfun.com/mean.html

Did you add them up and divide by 8?

YES SO THE ANSWER IS 30

To find the mean of a data set, you need to find the sum of all the numbers in the set and then divide it by the total number of values in the set.

In this case, the data set is: 25, 30, 20, 20, 25, 35, 35, 10.

To find the mean, you add up all the numbers:
25 + 30 + 20 + 20 + 25 + 35 + 35 + 10 = 180

Then, divide the sum by the total number of values, which is 8 in this case:
180 / 8 = 22.5

So, the mean of the given data set is 22.5.

None of the answer choices given matches the exact value, but the closest option is b. 20.

25 + 25 = 50

35 + 35 = 70
30 + 20 + 20 + 10 = 80

50 + 70 + 80 = ??

Divide that number by 8.