Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.

Excel's basic formulas work fine for simple calculations, but they quickly become cumbersome when you're dealing with complex data analysis. You end up with nested functions that are hard to read, ...

Abstract: In the realm of digital arithmetic, the precision of fixed-width computations is often compromised by inherent limitations such as quantization, rounding, and overflow errors. This paper ...