Tables, named ranges, line breaks, modern functions, and helper columns make Excel formulas easier to read, audit, and fix.

Studies, including those by spreadsheet researcher Raymond Panko, estimate that up to 90% of all spreadsheets contain at ...

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

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

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

Most people think of eyeliner as a single item. One pencil. One pen. One formula you use for everything. But if our first eyeliner story taught us anything, it’s that tiny tools can completely shift ...

Three Maricopa Unified teachers will represent the district at a statewide math conference, sharing classroom strategies that ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas including investing, ...

Jan. 12, 2026 A screenshot purportedly showing the "rap sheet" of 37-year-old Good, whom an ICE agent fatally shot in early January 2026, listed her age as 44. Jan. 11, 2026 The monarch allegedly said ...

First-order derivatives: n additional function calls are needed. Second-order derivatives based on gradient calls, when the "grd" module is specified (Dennis and Schnabel 1983): n additional gradient ...