random1234 Posted October 12, 2007 Share Posted October 12, 2007 Hi there all, i'm just curious as to whether theres a way to calculate NormalCDF probabilities using PHP? If there is, could somebody give me a hand in finding the solution as i've got not much of a clue on how to derive the normal distribution formula since my calculus has gotten rather scrappy. Thanks for the help. Link to comment https://forums.phpfreaks.com/topic/72875-normalcdf-using-php/ Share on other sites More sharing options...
kathas Posted October 13, 2007 Share Posted October 13, 2007 Hi there, I don't know my math (integrals are in the next semester) pal cause i haven't finished school yet but i believe you know yours... so i 've been here... That is how one calculates CMF. If you can calc the integral with php then you can cal CMF... (Although i have a feeling that this integral is supposed to give out a function since it is from minus infinity to x, which is not a calculable (scalar value) area, now can this integral be calculated with php???) Link to comment https://forums.phpfreaks.com/topic/72875-normalcdf-using-php/#findComment-368516 Share on other sites More sharing options...
ToonMariner Posted October 15, 2007 Share Posted October 15, 2007 is there not a pecl distribution for stats????? you will need a lookup table to grab your z-values etc etc. how ever you can code the computations for working out much of the stats stuff - grab your equations for the normal distribution and roll your own - they are straight forward enough... Link to comment https://forums.phpfreaks.com/topic/72875-normalcdf-using-php/#findComment-369947 Share on other sites More sharing options...
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