Which of the following statement is not correct?
1
The ratio of precision of a measurement to the measurement itself is termed as relative precision and is expressed as 1 in d/sd, where d is the measurement and sd is the standard errors.
2
Accuracy is considered to be an overall estimate of the errors including systematic errors present in measurements.
3
Precision is referred to as the degree of fineness and care with which any physical measurement is made.
4
Accuracy and precision are the same if all systematic errors are removed. Precision is sometime referred to as external accuracy.