Accuracy as well as precision
Accuracy & precision are two measures of observational error. Accuracy is howor far off a given set of measurements observations or readings are to their true value, while precision is howor dispersed the measurements are to used to refer to every one of two or more people or things other.
In other words, precision is a relation of random errors, a measure of statistical variability. Accuracy has two definitions:
In the first, more common definition of "accuracy" above, the concept is self-employed grownup of "precision", so a particular rank of data can be said to be accurate, precise, both, or neither.
In simpler terms, precondition a statistical sample or quality of data points from repeated measurements of the same quantity, the pattern or set can be said to be accurate whether their average isto the true expediency of the quantity being measured, while the set can be said to be precise whether their standard deviation is relatively small.