Learn What GROUPBY Can Really Do in Excel : From Smart Sorting to Percent of Totals

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

Why Excel files get huge, and the 5 fixes that shrank mine from 50MB to 2MB

Excel files bloat from ghost used ranges, formatting, pivot caches, and images. These quick fixes massively cut the size of ...
Kenji Explains on MSN

Split Excel data into multiple sheets automatically

In this video, learn how to split data into multiple worksheets in Excel, such as separating total sales into quarterly ...

Excel tip: Define cell names to cut errors and speed up your formulas

Using the example in our spreadsheet or a similar spreadsheet, highlight all the revenue numbers in the sheet and then in the ...
IEEE

Formulas for Data-Driven Control: Stabilization, Optimality, and Robustness

Abstract: In a paper by Willems et al., it was shown that persistently exciting data can be used to represent the input-output behavior of a linear system. Based on this fundamental result, we derive ...

Build Faster Excel Workflows Using FILTER, IFS, XLOOKUP, and LET for Real-World Data

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...