# Thread: How to count effectiveness?

1. ## How to count effectiveness?

Hello everybody, I know you are busy people, but I really would appreciate your help. I am writing some work for my university and I am literally can't figure this out, this IS and should be simple....I am literally being a retard, 15 hours straight working on papers have done that.

How to count effectiveness?

If I have a product which does treatment from 0.18 parasites to 0.02 parasites. How effective the product is if 100% effective is 0.00 ?

2. ## Re: How to count effectiveness?

Originally Posted by Paul1995
Hello everybody, I know you are busy people, but I really would appreciate your help. I am writing some work for my university and I am literally can't figure this out, this IS and should be simple....I am literally being a retard, 15 hours straight working on papers have done that.

How to count effectiveness?

If I have a product which does treatment from 0.18 parasites to 0.02 parasites. How effective the product is if 100% effective is 0.00 ?

(Starting parasites - Ending parasites)/Starting parasites

(.20 - .02)/.20 = .18/.20 = .09/.1 = 90% effective

Steve

3. ## Re: How to count effectiveness?

[QUOTE=SGS;931401](Starting parasites - Ending parasites)/Starting parasites

(.20 - .02)/.20 = .18/.20 = .09/.1 = 90% effective

Steve[/QUO

I don't know where I got .20 as starting parasites !!!

(.18 - .02)/.18 = .16/.18 = .08/.09 = 89% effective