| [ QuizWit ] in KIDS 글 쓴 이(By): pinkrose (mirantz) 날 짜 (Date): 1998년 11월 26일 목요일 오후 12시 51분 21초 제 목(Title): [a] poisson distribution most of probability density function belongs to a class of exponential family. exponential family has very remarkable properties such as additivity. if two random variablex x1 and x2 are independent, then their linear combnation is again poisson. if not you may form bivariate poisson distribution by going thru matrix formulation for its generating function. but i think you wanted to ask for independent r.v.'s ^^ answer: look at any standard probability text book. |