If your numbers are precise but inaccurate, does it mean it might have been instrumental error?

Question

For my lab, I got an average of 8% error, all numbers close to each other. A question asks which was the possible major source of error. Since the numbers are precise but inaccurate, would this mean it is more likely an instrumental error? One of the scales only read two sig figs, which would make it more inaccurate overall.

%rsd: 5.08

std:

Answer 1

You are correct that your values are precise but not accurate. Could this be an instrument error? Yes, it could be.