while taking data measurements ,accuracy and Precision are two
important factors to consider .
Both reflect the closeness of a measurement to a known standard
actual value.
Accuracy refers to the closeness of a measured value to a
standard or known value
whereas precision refers to the closeness of two or more
measurements to each other, and also lets us know how reproducible
measurements are,though they are far from the accepted value.
Precision is independent of accuracy.
We can be precise but inaccurate and can also be accurate but
imprecise.