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

Perhaps you saw the headlines this weekend: “Sexting: Just About Everyone’s Doing It,” from Discovery News, or “Online survey finds 8 in 10 adults have engaged in sexting,” from CNN. Wow – that’s ...

Melissa Horton is a financial literacy professional. She has 10+ years of experience in the financial services and planning industry. NicoElNino / Getty Images Simple random sampling gives each member ...

The way people make decisions often seems irrational. One explanation for this behavior is that they seek evidence that confirms what they already believe, a phenomenon called 'confirmation bias'. But ...

In a paper initially prepared for the planning meeting for this review, Peytchev (2013) observes that drawing “unbiased inference from probability-based surveys relies on the collection of data from ...