A random walk is the process by which randomly-moving objects wander away from where they started. Nano takes a random walk (in one dimension). Staring at (0, 0), Nano will either take a step to the left or the right. (It is equally likely that Nano will take a step to the left or the right.) You may set the number of steps (repeats) from 0 to 225. How Far Away from the Start do you think Nano will after completing all the steps? Hint: Set your repeats to some number. Run the experiment (the walk) a number of times. After each walk, write down how Far Way from the Start Nano is. When you feel you have enough trails, find the average.
See Random Walks: The Mathematics in 1 Dimension for more details about random walks. http://www.mit.edu/~kardar/teaching/projects/chemotaxis(AndreaSchmidt)/random.htm