Question

how do i write a proof for Σ(xᵢ-͞x)=0 ?

Answer 1

What is the box, It doesn't register?

Answer 2

what exactly do you mean by box, the second x?

Answer 3

Yes. Is it xi-xf?

Answer 4

its the mean of x. its x with a line above it.

Answer 5

i just don't remember anything about writing proofs, let alone a proof for this problem. im so lost, so any form of help is greatly appreciated.

Answer 6

Sorry mate, I have no idea. Haven't done this math yet. However, if you are doing a proof, you can make sure that you solve it for every value of x and for every case. Sorry I'm no help!

Answer 7

thanks anyway!