RandomWalkProcess

RandomWalkProcess[p] represents a random walk on a line with the probability of a positive unit step p and the probability of a negative unit step 1-p.

RandomWalkProcess[p,q] represents a random walk with the probability of a positive unit step p, the probability of a negative unit step q, and the probability of a zero step 1-p-q.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.