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Percent Error is the difference between the true value and the estimate divided by the true value and the result is multiplied by 100 to make it a percentage. The percent error obviously can be positive or negative; however, some prefer taking the absolute value of the difference.

The formula is the absolute value of the experimental value (minus) the theoretical value divided by theoretical value times 100.

% error = (|Your Result - Accepted Value| / Accepted Value) x 100

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13y ago

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More answers

The percent error formula is:

[ \text{Percent Error} = \left| \frac{\text{Measured Value} - \text{Actual Value}}{\text{Actual Value}} \right| \times 100% ]

It is used to quantify the difference between a measured value and the actual (true) value.

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AnswerBot

10mo ago
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the difference between the true value and the estimate divided by the true value. The result is multiplied by 100 to make a percentage

* * * * *

Nearly correct. It is the estimated (or measured) minus the true value, the difference divided by the true value and then the result multiplied by 100 to make it a percentage.

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Wiki User

12y ago
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For any percent error formula:

100 x (Experimental Value - Theoretical Value) / Theoretical Value

Take the absolute value of this (make it positive) , and give it a percent sign.

Example: The listed mass was 1 gram, and you found it to be .9 grams

100(0.9-1)= -10

-10/1 =-10

-10 becomes 10

10% error

You will NEVER have a negative percent error, and its a good idea to write "error" after the percent sign.

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Wiki User

14y ago
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A Percentage Error Is An Estimated Value In Percentages That are not Quite True but you made no mistakes, its just the way of math

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Wiki User

12y ago
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Error = Observed value - True Value.

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Wiki User

13y ago
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It is absolute error divided by actual measurement multiplied by 100

absolute error=1/2(actual measurement)

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Anonymous

4y ago
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It is 600

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Anonymous

4y ago
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Q: What is the percent error formula?
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Continue Learning about Natural Sciences

What is the percent of error in evaluating the molecular mass of a compound if the experimental value was 105.2 amu and the known value was 107.5 amu?

The percent error is calculated using the formula: |(experimental value - known value) / known value| x 100. Plugging in the values: |(105.2 - 107.5) / 107.5| x 100 ≈ |-2.3 / 107.5| x 100 ≈ 0.021 x 100 = 2.1% Therefore, the percent error in evaluating the molecular mass of the compound is approximately 2.1%.


What is the percent error for a measured value of 3.24 and a correct value of 3.02?

Percent error is calculated using the formula: ((measured value - correct value) / correct value) x 100. Plugging in the values, we get ((3.24 - 3.02) / 3.02) x 100 = (0.22 / 3.02) x 100 ≈ 7.28%.


The accepted value for the boiling water is 100.0 degrees Celsius when you measure this value in the laboratory your result is 98.5 degrees Celsius What is the percent error?

The percent error is calculated by taking the absolute difference between the accepted value and the measured value, dividing by the accepted value, and multiplying by 100%. In this case, the absolute difference is 100.0 - 98.5 = 1.5. Dividing by 100.0 and multiplying by 100% gives a percent error of 1.5%.


A student determined that the density of a sample of tin is 8 00 mL when the actual density of tin is 7 28 mL What was the percent error in the student's calculation?

The student's calculation resulted in a density that is higher than the actual density. To calculate the percent error, the formula (|measured value - actual value| / actual value) x 100 is used. Plugging in the values, the percent error would be [(8.00 - 7.28) / 7.28] x 100 = 9.89%.


What does it mean if the percent yield is over 100?

It is an error (in science).