This is a MATLAB assignment and I don't understand how to run the simulation X times to create an ensemble.

Run this simulation X times to generate an ensemble. Record/store the final location of the walker at the end of each simulation in the ensemble.

Generate a histogram for the ending position of the walker for each simulation in the ensemble

Adjust the bin-width to make sense of your results (help histogram)

Repeat and plot results for X = [1000, 2000, 10000, 20000, 100000, 1000000]

This is what I have to far.

for time = [1:1000]; % time data points 1 to 1000

position = rand(1, 1000); % input 1000 position points

comet(time, position); % plot the walker's position

title('Random Walkers Steps');

xlabel('steps');

ylabel('position');

end