What is the greatest possible error when measuring to the nearest quarter of an inch?
1 Answer
Length measurement accuracy (error) is always +/-
Explanation:
First, you must of course have a "calibrated" measurement device for any accuracy at all. Second, because anything smaller than the least calibrated distance on such a device can only be approximated by eye, the accuracy (or error) of the measured length can never be better than the approximate "middle" between the calibration marks.
You might make a claim to "see" the difference between
Thus, if your calibration device (ruler, for example) is only calibrated to
However if your ruler is calibrated down to