Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

IronCalc brings fast, Excel-compatible spreadsheets to your browser without locking you into Microsoft 365 or Google’s cloud.

Custom pharmacy functions enabling a user to calculate patient metrics, lab values, and drug dosing. With the Pharmacy Function Library, you can perform commonly used clinical pharmacy calculations.

Learn how to use the LAMBDA function in Excel to simplify complex formulas by creating custom functions for recurring ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person ...

Life gets busy, and sometimes those basic math skills from school days get a little rusty. Whether you're budgeting, measuring for a DIY project, or just having a math-related brain teaser thrown your ...

Math scores in the US have been so bad for so long that teachers could be forgiven for trying anything to improve them. Unfortunately, many of the strategies they’re using could be making things worse ...

The PMT function is an Excel Financial function that returns the periodic payment for an annuity. The formula for the PMT function is PMT(rate,nper,pv, [fv], [type]). The NPV function returns the net ...

The 2024 National Assessment of Educational Progress—also known as the “Nation’s Report Card”—is now out. It shows 12th-graders’ performance slipping to a record low. According to the report, ...

A decade-long slide in high schoolers’ reading and math performance persisted during the COVID-19 pandemic, with 12th graders’ scores dropping to their lowest level in more than 20 years, according to ...

Have you ever found yourself staring at a sprawling Excel spreadsheet, overwhelmed by rows and columns of data that seem impossible to manage? You’re not alone. Despite its reputation as a workplace ...