We have these rules:
- Can't quote answer to more significant figures than original data.
- Error quoted to one significant figure unless first significant digit is a one. In which case quote error to 2 significant figure.
But with original data to 3 significant figure, I get the answer 13.15(6).
i.e. 13.15 +/- 0.06
How do I quote this to 3 significant figure without breaking the rules?
If I round the error to 1, I still have to have a trailing 0: