An instrument is used to measure a quantity at different time instances, and the expected values of the quantity are to be the same; however, the measured values are different. A set of 5 measurements that were recorded at different time instances are 98,101,99,100 and 102.
An instrument is used to measure a quantity at different time instances, and the expected values of the quantity are to be the same; however, the measured values are different. A set of 5 measurements that were recorded at different time instances are 98,101,99,100 and 102. Find the precision of the third measurement.
Right Answer is:
0.99
SOLUTION
Precision for particular reading is given by,
Precision = 1 − | Respective reading − mean value|/Mean value
Mean value = (98 + 101 + 99 + 100 + 102)/5
Mean value = 100
Given third measurement reading = 99
The 3rd reading precision is given as
Precision = 1 − | 99 − 100|/100
= 1 −1/100 = 0.99