difference between precision and accuracy in physics
Answers
Answer:
Both accuracy and precision reflect how close a measurement is to an actual value, but they are not the same. Accuracy reflects how close a measurement is to a known or accepted value, while precision reflects how reproducible measurements are, even if they are far from the accepted value. Measurements that are both precise and accurate are repeatable and very close to true values.
Explanation:
Accuracy :-
There are two common definitions of accuracy. In math, science, and engineering, accuracy refers to how close a measurement is to the true value.
The ISO (International Organization for Standardization) applies a more rigid definition, where accuracy refers to a measurement with both true and consistent results. The ISO definition means an accurate measurement has no systematic error and no random error. Essentially, the ISO advises that accurate be used when a measurement is both accurate and precise.
Precision :-
Precision is how consistent results are when measurements are repeated. Precise values differ from each other because of random error, which is a form of observational error.
Answer:
Accuracy & Precision
Explanation:
Accuracy
Accuracy is the measure of how close the measured value is to the true value of the quanitity. It depends on many factors, less errors measurement became more accurate..
eg. Let 3.9 is true value of a quantity and two boys measured 3.6 and 3.8. Here 3.8 is more accurate as it is closer to true value.
Precison:
Precision tells us as to what resolution or limit, the quantity is measured. If we measure a certain thickness by two differnt devices having resolution 0.1 cm and 0.01 cm, the latter will give a measurement having more precision. Thus a value 1.56 is more precisedthan 1.5.
eg. A man measure a length of 5.56 cm by the two devices, and obtain the values 5.5cm and 5.34cm respectively, Though the first value is less precise, it is more acuurate as it is closer to the true value.
HOPE YOU WILL UNDERSTAND :)