Apple's Numbers spreadsheet for Mac, iPhone, and iPad, is not as powerful as Microsoft Excel, but most users will be ...

TEXTBEFORE and TEXTAFTER are a few more of my favorite Excel functions to clean messy spreadsheets. Excel's newer text ...

Exercise generally increases white blood cell count, but chronic overtraining can cause a WBC drop. Learn more here.

Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

Think you’ve mastered Microsoft Office? Think again. Tucked away in every Office program are time-saving tricks and powerful ...

The technique of the bootstrap is to replace any occurrence of the unknown distribution in the definition of the statistical function of interest by the empirical distribution function of the observed ...

How does the body respond to not sleeping for days? Learn about the mental and physical effects of acute sleep deprivation.

Discover what black box models are, their applications in finance and investing, and examples of how they drive decision-making without revealing internal processes.