Quality of Life Research, Vol. 15, No. 7 (Sep., 2006), pp. 1179-1190 (12 pages) Background: Fatigue is the most common unrelieved symptom experienced by people with cancer. The purpose of this study ...

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 ...

Let's use this classical statistics technique -- and some R, of course -- to get to some of the latent variables hiding in your data. Factor analysis is a classical statistics technique that examines ...

The American Statistician strives to publish articles of general interest to the statistical profession on topics that are important for a broad group of statisticians, and ordinarily not highly ...

In essence, factor analysis in marketing research is changing one marketing variable to see what affect, if any, the change has on the outcome. The change in sales also affects the bottom line of the ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...