Question

Expected Value? Can someone explain how to do this? xD

Answer 1

Do you have a graphing calculator?

Answer 2

Online one yes.

Answer 3

OK, well The formula for expected value is \[\Large E[x]=\sum_{i=1}^{n}x_iP(x_i)\]

Answer 4

Basically it means you have to add all of the x values by their respective probabilities and add all of the together, so going from the table, it would start off as
(0x0)+(1x\[\Large (0\cdot 0)+(1\cdot {1 \over 36})+(2 \cdot {1 \over 18})+...\]

Answer 5

Oh

Answer 6

If you have a graphing calculator (this is assuming you have a Ti-83, 84), put all the
x- L1 list
p(x)- L2 list

Then what you want to do is 1-VarStats and Put L1 as the list and L2 as the FreqList

Answer 7

Okay so you get 12.25?

Answer 8

I'm going to plug it in lol

Answer 9

Ok xD

Answer 10

I got 12.25

Answer 11

Ok thanks

Answer 12

Yw