Question

The exact value is 150m. A students record it as 149.1m in 1st turn and 150.8m in the 2^nd turn. Comment his/her recordings.

(a) precise

(b) accurate

(c) neither precise nor accurate

(d) both precise and accurate

I have been asked this question during an interview for a job.

My enquiry is from Uncertainty in Measurement in portion Chemistry Basic Concepts of Chemistry – Class 11

Answer 1

Correct choice is (b) accurate

Easiest explanation: These values are accurate as they are nearer to the exact value. Precision is referred to as the closeness of different measurements for the same quantity. Accuracy is the degree to which it’s taken as standard or almost equivalent to it.