Performance becomes an issue with large datasets too. A poorly written macro can bog down Excel and take forever to complete, ...

Array formulas let you perform calculations across entire ranges of data in a single formula. Hence, you can handle lightning-fast lookups, filtering, and sorting with just one po ...

Many use different formulas to calculate racial makeup, and it’s not obvious there’s a “right” way. By Aatish Bhatia Aatish Bhatia and Upshot colleagues have contacted over 90 selective colleges to ...