Three chemistry students measured the length of a copper bar. The recorded lengths were 5.05 cm, 5 cm , and 5.1 cm, What is the average length of the bar by showing my work ?

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21-10-2014
Chemistry

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Three chemistry students measured the length of a copper bar. The recorded lengths were 5.05 cm, 5 cm , and 5.1 cm, What is the average length of the bar by showing my work ?

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wolfieblob wolfieblob · Answer 1 · 2014-10-21T15:10:08-04:00

wolfieblob wolfieblob

21-10-2014

5.05 + 5 + 5.1 = 15.15cm Then you just divide it by the amount of measurements you had like this:15.15 ÷ 3 = 5.04999971cm Then you can just round it to the 3rd figure: 5.05cm < And that's the mean/average length of the bar. :) (Or the one above if you want all of the decimals too)

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