GCSE statistics rounding

How many sf/dp do u round to in stats?? I used to always round to 3sf but sometimes the mark scheme says that's wrong.

well its only wrong if the mark scheme says 'round to .. dp'

it doesn't really say (this is from the edexcel textbook test questions), but on one of the worked solutions, it gave a purposefully wrong solution saying rounding error (it rounded to 3sf but the mark scheme wanted 2sf) while not actually saying that in the question.

what was the question?

Sry, I just realised it was a rounding error earlier in the answer that resulted in 214 not 210 being the answer. It wasn't really clear by the marking.