Learn how representative samples and random samples differ and why combining them minimizes sampling bias for accurate data.

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Gordon Scott has been an active investor and technical analyst or 20+ years. He ...

Forbes contributors publish independent expert analyses and insights. I write about the broad intersection of data and society. One of the great ironies of the “big data” revolution is the way in ...