Compare with density . The volume of a unit mass of substance. Specific volume is the reciprocal of density. The standard deviation is a statistical measure of precision. Compare with random error , gross error and mistake .
Systematic errors have an identifiable cause and affect the accuracy of results.
Compare with accuracy . A standard for comparison in measurements. For example, the meter is a standard length which may be compared to any object to describe its length. Weight is the force exerted by an object in a gravitational field. Sign up for a free monthly newsletter describing updates, new features, and changes on this site.