‘Data Is’ or ‘Data Are’?


The bottom line is that in general writing, you’re free to use “data” as singular or plural depending on what sounds right to you, but know that if you treat it as singular, some people might complain. If you want to use a singular noun, it’s safer to use a synonym such as “information” or “evidence”; and if you’re writing about science or medicine, definitely treat “data” as plural.