What is the difference between representative samples and random samples, and how are they are used to reduce sampling bias?

The first video in our "Methods 101" series is about random sampling, a concept that undergirds all probability-based survey research. Here's how it works.

The author presents a generalization he worked out in 1950 of von Neumann's method of generating random samples from the exponential distribution by comparisons of uniform random numbers on $(0, 1)$.