Question

You take thirty measurements in order to find the length of a rod, you calculate the...

You take thirty measurements in order to find the length of a rod, you calculate the average and obtain the value L0. Supposed that now a different person takes twenty measurements as well of the same rod, then calculates the average and obtains the same L0 as you. Does it mean that both of you obtain a result with the same precision and accuracy? Yes or no?

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Answer #1

The precision for both measurement will be same,while the accuracy of person with 30 measurements will be more than the person who did 20 measurements.

Accuracy is the degree of closeness to true value. Precision is the degree to which an instrument or process will repeat the same value. Precision is property of an instrument and will be same for measuring with same instrument. In other words, accuracy is the degree of veracity while precision is the degree of reproducibility.

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