- #1

roflmao33

- 6

- 0

## Homework Statement

Lets say I roll 2 fair dice and take the sum of the square of each dice. What formula will be the variance?

## Homework Equations

var(x)=e(x^2)-e(x)^2

## The Attempt at a Solution

For dice A;

E(A)=3.5

E(A^2)=91/6

^ same for dice B.

VAR(A^2+B^2)=E(A^4)-E(A^2)^2+E(B^4)-E(B^2)^2 ?