Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions. One of the ...

The three most common open source technologies for writing data science programs are Python, SciLab, and R. Here's how to write program-defined functions in R. There's no clear definition of the term ...

Tired of struggling with pivot tables every time you need to summarize your data in Excel? You’re in luck! Excel’s new GROUPBY and PIVOTBY functions are here to make your life easier. These powerful ...

When you dive into the world of Microsoft Excel spreadsheets, you quickly realize how powerful its functions can be. One such function that you will find incredibly useful is the RANK function. This ...

Don't listen to anyone who tells you that the VALUE function in Microsoft Excel is obsolete. You'll probably seldom need to use it on its own, but when combined with other functions, it's still as ...