The article at the link below should help you get a handle on the subtle differences between accuracy and precision.
What determines how precise a measurement is
because of the mass
Yes it is possible. 21.354 inches is very precise but could be inaccurate.
An example of being precise but not accurate is measuring the length of a table as 150.0 centimeters when the true length is actually 160 centimeters. The measurement is very specific and consistent, indicating precision, but it does not reflect the true value, demonstrating a lack of accuracy. This scenario highlights the difference between consistently obtaining the same result and obtaining the correct result.
Synonyms of "specific" and "precise" include accurate, detailed, explicit, stringent or rigorous. A precise measurement is one made with well-maintained equipment and using the correct methods in a careful manner.
What determines how precise a measurement is
Imagine a dartboard. An accurate measurement would be analogous to hitting the bulls-eye. While a precise measurement is just the tight clustering of shots.
Accuracy refers to how close a measurement is to the true or accepted value, while precision refers to how close repeated measurements are to each other. A measurement can be precise but not accurate if it consistently misses the true value by the same amount. Conversely, a measurement can be accurate but not precise if the measurements are spread out but centered around the true value.
The measurement that is accurate is one that is precise. These are also commonly titled accurate measurements in the books.
No. Accurate relates to how close the actual measurement the instrument measures. Precise relates to how much detail the instrument gives when measuring. They are independent to each other: An measurement can be precise and accurate (eg the value of π is 3.141592654) An measurement can be precise and inaccurate (eg the value of π is 1.733677432) An measurement can be less precise and accurate (eg the value of π is 3.14) An measurement can be less precise and inaccurate (eg the value of π is 1.73).
An automatically measurement has a higher precision than a manually measurement.
because of the mass
The difference between 6mm and 1/4 inch is very small in terms of measurement accuracy and precision. 6mm is slightly larger than 1/4 inch, but the difference is minimal and may not be noticeable in most practical applications. Both measurements are precise and accurate for most everyday purposes.
An accurate answer to a question answers the question. The precision depends on the level of accuracy of the answer.
Yes it is possible. 21.354 inches is very precise but could be inaccurate.
The scale is precise but not accurate. (APEX)
the role of measurement is it can help us to solve some things accurate and precise