We present a simple sample-size formula for weighted log-rank statistics applied to clustered survival data with variable cluster sizes and arbitrary treatment assignments within clusters. This ...

Statistica Sinica, Vol. 26, No. 4, Bayesian Inference, Environment Statistics, Time Series Analysis, and Their Applications (October 2016), pp. 1747-1770 (24 pages) The aim of this paper is to ...

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 sampling and random sampling ...

When auditing a company, auditors use a combination of professional judgment and statistical sampling methods to estimate account balances. Statistical sampling is an efficient way to design samples, ...

Let me issue an emphatic disclaimer up top: I love the PGA Tour’s “Strokes Gained” metrics, and I’ve loved them for years. As the statistical brain child of Columbia University professor Mark Broadie, ...

Our latest focus is trying to bring data to bear on common questions we get asked by clients. Last month the topic was: how well does my device need to perform to get premarket clearance from FDA?

Bruce Rondon has shown us extremes in his pitching this season. On July 10 against Minnesota, the Tigers reliever gave up three hits in the ninth inning in part of an epic collapse from a 6-1 ...