This paper discusses the problem of choosing a linear model from a set of nested alternatives. Two popular devices for selecting a model in this situation have been model selection criteria and ...

Several graphical techniques for checking the proportional-hazards assumption of Cox's semiparametric regression model for censored survival data are discussed, and some numerical tests to support the ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

The Detroit Lions were one of the NFL's most dynamic offenses last season, with Dan Campbell's stars quickly becoming Fantasy football staples. Jared Goff, Jahmyr Gibbs, David Montgomery, and Amon-Ra ...