Productivity apps are great. They help you stay on track, manage tasks, and deal with the overwhelming flow of information that life might throw at you. That said, they're also getting increasingly ...

COUNTIFS is the single, versatile function you need in Microsoft Excel to count data based on any combination of criteria. It handles complex AND/OR logic, dynamic cell references, and partial text ...

FORECAST.ETS applies an exponential triple smoothing (ETS) algorithm to create forecasts that can include trend and seasonal ...

Although there are many functions in the base package of R, sometimes there may not be a function that does exactly what you want. In this case, R allows users to create their own functions and call ...

Sean Ross is a strategic adviser at 1031x.com, Investopedia contributor, and the founder and manager of Free Lances Ltd. Gordon Scott has been an active investor and technical analyst or 20+ years. He ...

Custom functions enable you to add new functions to Excel by defining those functions in JavaScript as part of an add-in. Users within Excel can access custom functions just as they would any native ...