Generate a random number with max, min and mean(average) in Java

Question

I need to generate random numbers with following properties.

Min should be 200

Max should be 20000

Average(mean) is 500.

Optional: 75th percentile to be 5000

Definitely it is not uniform distribution, nor gaussian. I need to give some left skewness.

Answer 1

Java Random probably won't work because it only gives you normal(gaussian) distributions.

What you're probably looking for is an f distribution (see below). You can probably use the distlib library here and choose the f distribution. You can use the random method to get your random number.