Originally Posted by

**Jobocop** I'm having some trouble understanding how to calculate the percentile from a cdf, i realize that a percentile ( ie. percentile .95) is the value in which 95% of all the probabilities contained within the function fall below - but how do you calculate that value from a function?

the fuction i was given is : **ky(1-y)** where **0>y>1** , btw this is my first post so i didnt know how to do a greater than or equal sign.. but that's what it's supposed to be! thanks

And if Mr.Fantastic is reading this, you've already saved my life a couple times. So thank you