Changes

[[Results]] are [[precise]] if they given to a large number of the same [[reading]] or [[measurement]] [[Significant Figures|significant figuresrepeat]]edly gives a similar value.

: [[Results]] may be said to be '''precise''' if each [[repeat]]ed [[result]]s is close to The smaller the same [[valuerange]].: The smaller the and [[uncertainty]] the greater the '''precision'''.: '''Precision''' is achieved by::*Using [[Measuring Instrument|instrument]]s with a high [[resolution]].:*[[Control Variable|Controllingcontrolling]] [[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 [[Measuring Instrument|instrument]] shows.

{| class="wikitable"|+ Experimental Measurements of [[pi]]|-| style="height:20px; width:100px; text-align:center;" |'''Method'''| style="height:20px; width:100px; text-align: center;" |'''Test 1'''| style="height:20px; width:100px; text-align:center;" |'''Test 2'''| style="height:20px; width:100px; text-align:center;" |'''Test 3'''| style="height:20px; width:100px; text-align:center;" |'''Average'''| style="height:20px; width:100px; text-align:center;" |'''Range'''|-| style="height:20px; width:100px; text-align:center;" |Method 1| style="height:20px; width:100px; text-align:center;" |3.27| style="height:20px; width:100px; text-align:center;" |3.09| style="height:20px; width:100px; text-align:center;" |3.01| style="height:20px; width:100px; text-align:center;" |3.12| style="height:20px; width:100px; text-align:center;" |0.26|-| style="height:20px; width:100px; text-align:center;" |Method 2| style="height:20px; width:100px; text-align:center;" |3.91| style="height:20px; width:100px; text-align:center;" |3.88| style="height:20px; width:100px; text-align:center;" |3.88| style="height:20px; width:100px; text-align:center;" |3.89| style="height:20px; width:100px; text-align:center;" |0.03|-| style="height:20px; width:100px; text-align:center;" |Method 3| style="height:20px; width:100px; text-align:center;" |3.57| style="height:20px; width:100px; text-align:center;" |2.89| style="height:20px; width:100px; text-align:center;" |2.93| style="height:20px; width:100px; text-align:center;" |3.13| style="height:20px; width:100px; text-align:center;" |0.68|-| style="height:20px; width:100px; text-align:center;" colspan = "5"|Method 1 is an : The most [[accurate]] value for [[measurement]]s because they are the closest to [[pi]] but it is they are not very [[precise]] - Close to because they have a [[range]] of 0.26. Method 2: These are the least [[accurate]] [[measurement]]s because they are the real number, furthest from [[pi]] but not many they are very [[precise]] because they have a [[Significant Figures|significant figuresrange]]of only 0.03. Method 3: 3.2111 Each [[measurement]] is not [[accurate]] because they are far from [[pi]], they are also the least [[precise]] because they have a range of 0.68. However, the [[preciseMean Average|average]] value for is the most [[piaccurate]] but as it is '''inaccurate''' - Not close enough the closes to the real number, but has several [[Significant Figures|significant figurespi]].|}