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{{#ev:youtube|https://www.youtube.com/watch?v=hRAFPdDppzs}}
==Key Stage 5==
===Meaning===
[[Results]] are [[precise]] if the same [[reading]] or [[measurement]] [[repeat]]edly gives a similar value.
===About Precision===
: A single [[reading]] may be more [[precise]] if the [[resolution]] of the [[Measuring Instrument|measuring instrument]] is higher. This is due to the upper and lower bounds of a single number being smaller when the number has a greater [[resolution]]. A [[ruler]] that [[measure]]s to the nearest 1cm has an [[uncertainty]] of ±5mm for each [[reading]]. A [[ruler]] that [[measure]]s to the nearest 1mm has an [[uncertainty]] of ±0.5mm, making a single [[reading]] more [[precise]].