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How do you calculate percent error?


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You can simply calculate the percent error by subtracting the experimental value from the literature value then divide it by the literature value, but pay attention that the value of "subtracting the experimental value from the literature value" is an absolute value so always is positive, then you will multiply it by 100%:

Percentage error=|(experimental value-accepted value)/(accepted value)|×100%

Edited by King inm Glau
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just wondering if this is absolutely necessary I cannot seem to find a literate value for the rate of fermentation in yeast by sugars....

thank you

I think that you should ask your teacher, it is good to have a lit. value because by finding %error you can evaluate your lab and see if it contain systematic errors. This information is from an IB moderator: if you don't have a lit. value, the teacher may take the average of the class and give you a lit. value..

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