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www.mathsisfun.com/numbers/percentage-error.html

Here is the way to calculate a percentage error: ... This is the formula for " Percentage Error": ... The theoretical value (using physics formulas) is 0.64 seconds.

astro.physics.uiowa.edu/ITU/glossary/percent-error-formula

When you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations.

sciencenotes.org/calculate-percent-error

May 16, 2014 ... The formula for calculating percent error is: Percent Error Formula. Note: occasionally, it is useful to know if the error is positive or negative.

www.percenterrorcalculator.com

Calculator solving for percent error given the measured or observed value and true, theoretical or accepted value.

www.wikihow.com/Calculate-Percentage-Error

How to Calculate Percentage Error. Calculating percentage error allows you to compare an estimate to an exact value. The percentage error gives you the ...

www.basic-mathematics.com/calculating-percent-error.html

Calculating percent error easily with a straightforward formula and a crystal clear explanation.