jQuery to work out average user rating when leaving a comment (wordpress)

jQuery to work out average user rating when leaving a comment (wordpress)

Hi,
 
I need to be able to work out the average star rating each user submits when leaving a comments on a wordpress site.
 
The is a star rating system which the user has to select, this is out of 5 stars, and it rates things like: -
 
- Value for money
- Customer Service
- Professionalism
- Flexibility
- Quality of service
 
So the user will rate each one of the above out of 5. They submit their comment and then their result gets displayed as an image within the comment reply.
 
Now my problem is i need to get an average vote in 'TEXT' for each users rating.
 
Is there a way using jQuery to catch what the user has rated work out the average overall rating then copy the text to a div, where it will say "Average user rating = x /5" etc?
 
I have attached a screenshot to demonstrate this.
 
Would be brilliant if anyone can help, ive been at it for months with no luck. So if you like a challenge you will like this,
 
Link to the test page: -
 
myweddingreviews.co.uk/uncategorized/rating-test.html
 
Thanks
Paul