| [ QuizWit ] in KIDS 글 쓴 이(By): iLUSiON (띠띠빤쮸) 날 짜 (Date): 2004년 5월 19일 수요일 오후 02시 47분 49초 제 목(Title): Re: EXP QUIZ 3. hehe.... nice job. this is math proof using differential equation <-- i don't like it. this proof is mechanical. there is a different version of proof using probilitistic argument that is very intuitive. that is where student made a lot of mistake confusing real variable and random variable and trying to differentate random variable <-- although there is a way to define derivative of random variable. this problem is the basis of most widely used graphical tool for checking gaussianess. if two random varialbes are gaussian, then QQ-plot should be a straight line. now you compare the emphirical distribution of data with standard normal distribution and you get a straight line iff data follows Gaussian. :) iLUSiON whitepolarcow@hotmail.com |