Hi. i am a computer science student and i am given a networking related project to make in my final term. and this project includes statistics in 3 modules.

and i am rubbish at statistics, i have never studied this, and so far i have been trying to get help from searching (with wikipedia as the main source) with out much luck. so thats why i am posting here with hope of some help.

in first module (statistic related module) i have to implement poisson distribution (i think that this would be the correct distribution) for request arrival.

-> User start a session of the program and different requests are made at different times, and at the end of the session we want to know the average time using poisson distribution.
->there is no set time for the session, it can run for any time limit.


problem so far is that i can not keep all the requests, and all the examples i have seen of poisson distribution requires all the data, and finding its mean and then calculating. i can not keep that, i need some formula that takes previous distribution values and the new request packet's value to calculate the new value to be used in next request.

is this possible with poisson distribution.

i would be really thankfull for any and all help in this.