accuracy

noun2

1. •
   The state of being accurate; being free from error; exactness; correctness

   • Its professed end [of logic], is to teach men to think, to judge, and to reason, with precision and accuracy. — 1827
2. •
   Exact conformity to truth, or to a rule or model; degree of conformity of a measure to a true or standard value.

   • The jury doubted the accuracy of the witness' comments.