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# Why is it important for scientists to calculate percent error?

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# How do you calculate percent error in physics?

Take the difference between your experimental value and your known value, and divide that difference by your know value. Say you experimentally found the force of gravity to …be 8m/s 2 , and you know that the true/known value is 9.8 m/s 2 , the percent error would be l 8 - 9.8 l = 0.1836 or 18.36% 9.8 (MORE)

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# Why do you calculate percent error?

you take the actual minus the theoretical number and divide that by the actual number and multiply it by 100.

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# What can you ignore when you calculate percent error?

plus and minus signs

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In Physics

# How are the error and the percent error of a measurement calculated?

Take the correct value, subtract the value you got, and then divide that figure by the correct value. Then take the absolute value of that and multiply by 100. For example, sa…y I weighed something and got that it was 2.5 grams, but it really was 2.7 grams. 2.7-2.5=.2. .2/2.7=.074. .074*100=7.4. Thus, I had 7.4% error. Another example: 16-15=-1. -1/15=-.067. .067*100=6.7% error. (MORE)