Question

A hole drilled into a manufactured part is specified to have a diameter of 1.50 cm. Ten parts are sampled from a production run, and the average hole size is measured to be 1.57 cm. Is the average hole diameter measurement a better indicator of accuracy or precision of the drilling process? A. Accuracy B. Precision C. Both accuracy and precision D. Neither accuracy nor precision

Answer 1

The average hole diameter measurement is a better indicator of precision rather than accuracy of the drilling process.

Step-by-step explanation:

The average hole diameter measurement is a better indicator of precision rather than accuracy of the drilling process. Accuracy refers to how close a measurement is to the correct value, while precision refers to the agreement between repeated measurements. In this case, the average hole size being close to the specified size indicates precision, as it shows consistent measurements, even if they are slightly off from the desired value.

The average hole diameter measurement in the scenario you provided is primarily an indicator of accuracy, rather than precision. Accuracy is a measure of how close a given measurement is to the correct or accepted value. In this case, the specified diameter of the hole is 1.50 cm, and the average measure from the sampled parts was 1.57 cm, showing that it's close to the correct value, hence indicating accuracy.

Precision, on the other hand, refers more to the consistency of measurements when something is measured multiple times. The consistency or standard deviation of the diameters is not given, so we cannot speak to the precision of the measurements here.

Learn more about Precision and Accuracy