Q: When do we say measurement is precise?

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What determines how precise a measurement is

It is precise if it is repeatable.

Is as exact as possible

tenth of a gram

The precise measurement is 5.7 mm for the first value and 3.6 m for the second value.

Related questions

No. An answer is only as precise as the least precise measurement from which it was calculated.

What determines how precise a measurement is

It is precise if it is repeatable.

when it has either been witness or confirmed by a governing body or official.

You can make a very precise measurement with a poorly calibrated device.

No. Accurate relates to how close the actual measurement the instrument measures. Precise relates to how much detail the instrument gives when measuring. They are independent to each other: An measurement can be precise and accurate (eg the value of π is 3.141592654) An measurement can be precise and inaccurate (eg the value of π is 1.733677432) An measurement can be less precise and accurate (eg the value of π is 3.14) An measurement can be less precise and inaccurate (eg the value of π is 1.73).

measuring tape

An automatically measurement has a higher precision than a manually measurement.

19.2cm is more precise

tenth of a gram

Is as exact as possible

A measurement in pints is more precise.