Why is it nescessary to take three readings and then find the avarage?
If you are doing a lab where you have to measure some stuff, [ taking three readings insures that your first reading wasn't a fluke.
Lets say you measure volume in an experiment.
first reading = 3.4 Litres
second reading = 3.6 Litres
third reading = 2.9 Litres
Because the tool you are using to take the readings may be inadequate, its important to back up your readings by taking more than one and then adding the tree and dividing the result by 3 in order to get the average. This will significantly cut down on computational errors throughout the rest of your experiment, because if you only
take 1 reading and its 3.6, then its too high, and if you are taking first reading and its 2.9, then you are overevaluating the volume or underevaluating the volume. The average is (3.4 + 3.6 + 2.9)/3 = 3.3, which is more representative of your readings than those bloated values. ]
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jher000|Points 7312|
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Asked 6/6/2012 12:36:07 PM
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