Apparently, this user prefers to keep an air of mystery about them.
5 Mean distance from origin after $N$ equal steps of Random-Walk in a $d$-dimensional space. mar 11 '12
2 Probability, Random Walk, Distance from Origin after N steps in 2 and 3 dimensions [duplicate] sep 1 '13
1 Random Walk - expected distance from Origin apr 10 '12
1 Reference Request, Random Walk [duplicate] jun 7 '13