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how to work out total percentage uncertainty. In other words it explicitly tells you the amount by which the original measurement could be incorrect. Quoting your uncertainty in the units of the original measurement for example 12 01 g or 34 02 cm gives the absolute uncertainty.
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The first step is to find the absolute uncertainty. 3100 3100 003. In this case the actual value can deviate from the mean 5cm by 1cm so the minimum and maximum.
Worked examples of percentage uncertainty calculations and how to reduce them.
When you have uncertainty over a range of different values taking the average arithmetic mean can serve as a reasonable estimate. For example 26 26100 26 You can also simply move the decimal to the left two places. Fortunately there is a special notation for the percent uncertainty so it will be easily recognized in writing295 kg 43. Calculate the measure or reported value.
