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Thanks for the help...i think that clarifies it! Basically i cant describe the improvement in terms of a `percentage improvement` ie 50% improvement or 75% improvement...but i could say there has been a 9% point improvement.
Amygdala
50%of 100= 50 50%of36= 18 1%of100= 1
25%of 100= 25 25%of36= 9 1%of200= 2
10%of 100= 10 10%of30= 3 1%of300= 3
err thats not really that difficult but i would like an answer to my question.
amygdala
I apologise in advance for my total idiocy with this one but its been a while since i did statistics and i`ve lost my book on it...
Here is the problem..
I survey a series of records (say 80) looking to see if a piece of information is recorded in them. I find that it isn`t recorded in any of them ie 0%.
6 months later i survey another series of different records..( say 90) and find that the information is recorded in 9 of them . ie. 9%.
So what is the % improvement in recording this piece of information...i know it isn`t 9%.
If the first survey had shown 1% recorded the info it would be a 900% improvement i think, but seeing as 0% was the initial result how do you calculate the improvement?
I`m sure this kind of thing was simple for me a few years ago! but as they say `if you don`t use it you lose it`
Amygdala.
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