Question

What is the mean of the following set of numbers?

121, 347, 45, 21, 300, 614, 312, 333, 421

A. 312
B. no mean
D. 251.4
C. 279.3

Answer 1

The mean is the same as the average!

To find mean ...

1. add up all the numbers

121+

347+

45+

21+

300+

614+

312+

333+

421

__________________

2,514

• Then we divide by how many numbers there are total

`(2,514)/(9)  = 279.33`

Final answer is D. (279.3)

Answer 2

C. 279.3

Explanation:

To find the mean of a set of numbers you have to add all of them together and divide them by how manys numbers there are

If we add all the numbers together it equals 2514

There are 9 numbers here

2514/9=279,333333

Therefore, the answer is C