My Math Forum random walk
 User Name Remember Me? Password

 Advanced Statistics Advanced Probability and Statistics Math Forum

 December 30th, 2016, 07:55 AM #1 Newbie   Joined: Nov 2016 From: Greece Posts: 14 Thanks: 0 random walk That' s what i have to do: random walk.jpg I don't know anything about random walk, but i think that i should start with binomial distribution. Anyone who has solved a similar exercise please post the answer. Thanks!
 December 30th, 2016, 11:55 AM #2 Senior Member     Joined: Sep 2015 From: CA Posts: 936 Thanks: 506 Why have you been given a problem that you know nothing about?
 December 30th, 2016, 01:33 PM #3 Newbie   Joined: Nov 2016 From: Greece Posts: 14 Thanks: 0 that's how education works in greek universities...
 December 30th, 2016, 01:50 PM #4 Senior Member     Joined: Sep 2015 From: CA Posts: 936 Thanks: 506 This problem is isomorphic to the problem of the distribution of strings of binary digits of length n. a 1 in the string indicates moving right, a 0 indicates moving left. The final position corresponding to a string is $p = 2 \displaystyle{\sum_{k=1}^n}~\left(d_k - \dfrac 1 2\right)$ each string has probability $2^{-n}$ the trick is to determine, for a given position, how many strings wind up at that position. I'm going to let you think about that and see what you come up with. Thanks from tsam
 December 31st, 2016, 07:41 AM #5 Newbie   Joined: Nov 2016 From: Greece Posts: 14 Thanks: 0 I think i know how to use the binomial distributionin this problem. Thank you for your help.

 Tags random, walk

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post JoeWright Advanced Statistics 0 February 16th, 2014 05:43 PM rooney_hunter Economics 0 May 13th, 2013 09:57 AM rooney_hunter Advanced Statistics 0 May 13th, 2013 04:24 AM SimplexLogic Algebra 3 January 26th, 2011 12:40 PM terry Advanced Statistics 3 September 16th, 2008 04:29 PM

 Contact - Home - Forums - Top