Dynamic arrays change the rules for formula output in Excel. When I write a formula that returns a list by default, I need to decide whether I want the result to spill across a range of cells or ...

Excel is the best piece of software ever made. We've talked a lot about basic formulas and advanced tricks that will make you way better at the program, but we've been remiss and forgot about our ...

I keep running into situations in Excel where I want to calculate a conditional sum, but my criterion is something along the lines of "Include cell B1 if cell A1 is a number, likewise B2 and A2, B3 ...