Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Representative and random sampling help ...
Julie Young is an experienced financial writer and editor. She specializes in financial analysis in capital planning and investment management. Dr. JeFreda R. Brown is a financial consultant, ...
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 ...
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 ...
The Annals of Statistics, Vol. 19, No. 2 (Jun., 1991), pp. 797-816 (20 pages) Biased sampling regression models were introduced by Jewell, generalizing the truncated regression model studied by ...
When estimating a treatment effect from observational data, researchers encounter bias regardless of estimation methods. In this paper, we focus on a particular method of estimation called Balance ...
As part of our #TakeASample Science Club, Science Friday asked its Twitter audience a few simple survey questions, and they answered by the thousands. But do the data mean anything?
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