How do I find means of samples and then mean of the means?

I have a 1000*25 vector with random integers from 1–1000000. Rows signify samples so I have 1000 samples, each having 25 random integers. How do I find the mean of each row/sample and then the mean of all the means (1000 means)?

Answer 1

[Kevin Holly]

Although it sounds like a homework question, I'll answer it since it is basic.

random = randi(1000000,1000,25);
mean_row = mean(random,2);
Mean_mean_row = mean(mean_row);

I would suggest taking the MATLAB Onramp course.

Documentation on functions used:

randi

mean