wilson score interval possible results range
This question is about Wilson score confidence interval (see here for explanation).
I do not completly understand the scoring equation:
(source: evanmiller.org)
But.. I just need to know what is the range of the possible results.
I need to give 1 out of 3 medals to the user accordig to the rate.
(I have recipes created by users, can do "Like" on them, and accordingly I calculate the rate of the recipe. User rate is calculated according to his recipes rates.)
Thanks Yoav
Solution
The equation is returning bounds on a probability, so the range should be greater than or equal to zero and less than or equal to 1.
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