Difference between revisions of "Precise"

Revision as of 09:14, 25 March 2019

Results are precise if the same reading or measurement repeatedly gives a similar value.

The smaller the range and uncertainty the greater the precision.

Precision is achieved by controlling variables so that readings are stable over a long period of time.

The number pi is 3.14159265359 correct to 12 significant figures.

Experimental Measurements of pi
Method	Test 1	Test 2	Test 3	Average	Range
Method 1	3.27	3.09	3.01	3.12	0.26
Method 2	3.91	3.88	3.88	3.89	0.03
Method 3	3.57	2.89	2.93	3.13	0.68
Method 1: The most accurate measurements because they are the closest to pi but they are not very precise because they have a range of 0.26. Method 2: These are the least accurate measurements because they are the furthest from pi but they are very precise because they have a range of only 0.03. Method 3: 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 average is the most accurate as it is the closes to pi.

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 Method 1: The most [[accurate]] [[measurement]]s because they are the closest to [[pi]] but they are not very [[precise]] because they have a [[range]] of 0.26.