Question

What is the mean of? 4,6,8,9,11,12,20

Answer 1

The mean of given data set is 10.

Explanation:

We have given a set of values.

4,6,8,9,11,12,20

We have to find the mean of the data set.

The formula to find the mean is:

mean = ∑
`(x_(i) )/(n)` wher n is the total number of values.

Total numbers = n = 7

Sum of values = ∑
`x_(i)` = 4+6+8+9+11+12+20

∑
`x_(i)` = 70

Putting values in formula, we have

Mean = 70/7

Mean = 10 which is the answer.

Answer 2

Answer: 10

Explanation:

By definition the mean is the avarage of the numbers.

Therefore, keeping the above on mind you can find the mean of the set given in the problem as it is shown below:

- Add the numbers.

- Divide this sum by amount of numbers there are in the set.

Then:

`mean=(4+6+8+9+11+12+20)/(7)\\mean=(70)/(7) \\mean=10`

Therefore, the mean of the set of data is: 10