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

Random is a fighting word for young Spencer Thompson. The comedian posted a video to a Facebook page entitled I Hate When People Misuse the Word Random. "The word random is the most misused word of ...

Glucose testing is a random blood test to check glucose (sugar) levels. It’s usually done by pricking the finger to draw a small drop of blood. This blood is then wiped onto a test strip that will ...

Excel provides three functions for generating random values: RAND(), RANDARRAY(), and RANDBETWEEN(), but there’s no comparable function for generating random letters. The truth is, most of won’t need ...

How to generate random numbers with no duplicates in Excel Your email has been sent Over the last few months, I’ve written about several of Excel’s new dynamic array functions. They’re powerful and ...

Tim Smith has 20+ years of experience in the financial services industry, both as a writer and as a trader. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a ...

In the real world, probability is a tough thing to characterize. If I roll a die, what does it mean to say that it has a one-sixth chance of coming up 5? We say that the outcome is random because we ...