[pmwiki-users] Announcing New Recipe: 5 star rating system
vadmin at math.uconn.edu
Fri Jul 11 09:08:25 CDT 2008
Sorry, But I really don't understand what is underlying what you are
trying to do.
On second thought maybe I do. You have users rating in stars, and you
want to compute some sort of average?
But where do the votes and 20 points come in? Is this just a device
to get a number to average?
On Jul 11, 2008, at 9:53 AM, Hans wrote:
> I like to invite your thoughts on the assignment of stars to average
> rating values.
> A user has five choices for her vote: 1 to 5,
> corresponding to 1 star to 5 stars. Each star carries 20 points, so a
> vote is between 20 and 100. The average is calculated as the
> arithmetic mean of all the votes: the sum divided by the number of
> The script implements the following allocation of stars to the
> $rating >= 90 5 stars
> $rating >= 85 4.5 stars
> $rating >= 80 4 stars
> $rating >= 70 3.5 stars
> $rating >= 60 3 stars
> $rating >= 50 2.5 stars
> $rating >= 40 2 stars
> $rating >= 30 1.5 stars
> $rating >= 20 1 stars
> $rating >= 10 0.5 stars
> $rating = 0 0 stars
> Is this acceptable or realistic?
> Note you get 5 stars for an average over 90, not 100
> (which would be very hard to achieve).
> Then only 5 points lower is 4.5 stars, and again 5 points lower 4
> stars. After that it is an even descend.
> And you never get 0.5 stars, since the lowest vote is 1 star.
> Any thoughts on this please?
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