Which function is used for counting all non-empty cells in a range within Google Sheets?

The function that counts all non-empty cells in a range within Google Sheets is the COUNTA function. This function is specifically designed to count cells that contain any kind of data, including numbers, text, logical values, and errors. It excludes empty cells from its count, making it particularly useful when you want to determine how many cells contain meaningful information in a given range.

In contrast, the COUNT function only tallies cells that contain numeric data, which means it won't provide an accurate count of all non-empty cells if text or other non-numeric data is present. The SUMIF and AVERAGEIF functions serve different purposes; they are used for conditional summation and averaging, respectively, rather than counting. Therefore, when the objective is to count all non-empty cells, COUNTA is the appropriate choice.