Question

The true value of a certain length is nearly 5.678 cm. In one experiment, using a measuring instrument A of resolution 0.1 cm, the measured value is found to be 5.5 cm. In another experiment using a measuring instrument B of greater resolution, say 0.01 cm, the length is found to be 5.38 cm. out of two instruments A and B which is more accurate and which is more precise ?​

Answer 1

Explanation:

The level of agreement between the actual measurement and the absolute measurement is called accuracy. The level of variation that lies in the values of several measurements of the same factor is called as precision.

Accuracy represents the nearness of the measurement with the actual measurement. On the other hand, precision shows the nearness of an individual measurement with those of the others.

Accuracy is the degree of conformity, i.e. the extent to which measurement is correct when compared to the absolute value. On the other hand, precision is the degree of reproducibility, which explains the consistency of the measurements.