Question

A student has the following grades: 80, 76, 78, 83, 83. Find the variance of the grades.
1) 2.8
2) 7.6
3) 4.2
4) 0

Answer 1

No, I won't do your homework for you.

Answer 2

lol this a quiz

Answer 3

well just explain it

Answer 4

You do realize that there are websites that can do this for you (give answers)? Like wolfram alpha?

Answer 5

what else

Answer 6

Look, you shouldn't be cheating on a test. go away.

http://www.wolframalpha.com/