Correlation Coefficient - Have I done this right?

Hey,

I have an exam on tuesday, and just revising.

I would like to know if I have done this right.

The reason I have wrote down the whole number from the calculator throughout the working out is a longggg story... basically because I am using a different formula to the one we have revised at university, where I have to find the value of X in this one....yes I do know how to round up but this wont give a definate answer as to whether the correlation is negative or positive.. but anyway here it is, I done it on Word and then print screened it...

http://i18.photobucket.com/albums/b1...nx/Q1PART1.png

http://i18.photobucket.com/albums/b1...nx/Q1Part2.png

http://i18.photobucket.com/albums/b1...nnx/Q1PRT3.png