How do I calculate PMF with the random numbers I generated?

73 views (last 30 days)
So there are two dice, the first being X1 and the second being X2, that are rolled 1,000,000 times. I'm trying to find the PMF of the minimum number in each role, meaning for each number (1 through 6) what is the probability that number will be the smallest number rolled between the two dice. I know how to generate the random numbers and have used the min function to create a 1x1,000,000 matrix containing the smallest number of each role. Is there a pmf function that I can use on this matrix and, if so, how do I use it and plot it?

Accepted Answer

the cyclist
the cyclist on 24 Apr 2020
Edited: the cyclist on 24 Apr 2020
The PMF is the number of times each value was obtained, divided by the total number of rolls, right?
I think you should be able to use the histcounts function, with the
'Normalization','probablity'
name-value pair as an input parameter.
For example,
x = [1 2 2 3 3 4];
pmf = histcounts(x,[unique(x) Inf],'Normalization','probability')
You could then use bar or histogram to plot it.

More Answers (1)

David Hill
David Hill on 24 Apr 2020
x=randi(6,1000000,2);
y=min(x,[],2);
histogram(y,6,'BinMethod','integer');

Products


Release

R2019a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!