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Created page with "==Key Stage 4== ===Meaning=== Results are precise if they given to a large number of significant figures. ===About Precision=== : '''Precision..."
==Key Stage 4==
===Meaning===
[[Results]] are [[precise]] if they given to a large number of [[Significant Figures|significant figures]].
===About Precision===
: '''Precision''' is achieved by
:*Using [[instrument]]s with a high [[resolution]].
:*[[Control Variable|Controlling]] [[variable]]s so that [[reading]]s are stable over a long period of [[time]]. Sometimes [[reading]]s fluctuate so they cannot be recorded to as many [[Significant Figures|significant figures]] as the [[Scientific Instrument|instrument]] shows.
===Accuracy vs Precision===
: The number [[pi]] is 3.14159265359 correct to 12 [[Significant Figures|significant figures]].
: 3.1 is an [[accurate]] value for [[pi]] but it is not very [[precise]] - Close to the real number, but not many [[Significant Figures|significant figures]].
: 3.2111 is a [[precise]] value for [[pi]] but it is '''inaccurate''' - Not close enough to the real number, but has several [[Significant Figures|significant figures]].
===Meaning===
[[Results]] are [[precise]] if they given to a large number of [[Significant Figures|significant figures]].
===About Precision===
: '''Precision''' is achieved by
:*Using [[instrument]]s with a high [[resolution]].
:*[[Control Variable|Controlling]] [[variable]]s so that [[reading]]s are stable over a long period of [[time]]. Sometimes [[reading]]s fluctuate so they cannot be recorded to as many [[Significant Figures|significant figures]] as the [[Scientific Instrument|instrument]] shows.
===Accuracy vs Precision===
: The number [[pi]] is 3.14159265359 correct to 12 [[Significant Figures|significant figures]].
: 3.1 is an [[accurate]] value for [[pi]] but it is not very [[precise]] - Close to the real number, but not many [[Significant Figures|significant figures]].
: 3.2111 is a [[precise]] value for [[pi]] but it is '''inaccurate''' - Not close enough to the real number, but has several [[Significant Figures|significant figures]].