Q: Can you calculate percent error of the results from an experiment?

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Because then you can assess how valid your results are =D

When you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value.

Percent error refers to the percentage difference between a measured value and an accepted value. To calculate the percentage error for density of pennies, the formula is given as: percent error = [(measured value - accepted value) / accepted value] x 100.

Percentage error = Value experimental-Value acceptedValueaccepted x 100

By definition of percent error, you can't. But you can approximate zero instead, with the number of decimals appropriate to the accuracy of the measurement, e.g. 0.01, 1E-100, etc.

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Because then you can assess how valid your results are =D

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Typically, if an experiment produces results that are statistically significant with a confidence level of at least 95%, it is considered to have worked. This means there is a 5% chance that the results are due to random chance rather than a true effect.

to ensure your experiment is precise and to prevent error to happen during experiment

percent error :)

Yes, your percent error can be over 100%. This means that somewhere during your experiment you made a big error.

It means theres a high amount of variation between the results used to calculate the mean value for a particular sample or experiment

Percent error is typically used to describe the difference between an expected value and an observed value (measured in an experiment). To calculate percent error, you must know the expected (or theoretical) value, determined from reference manuals and formulas. Percent error = [(actual measured value)/(expected value) - 1] x 100% Let's say that you do a chemistry experiment, where you expect to use 30 mL of a hydrochloric acid solution to neutralize a prepared solution of sodium hydroxide. When you perform the experiment, you actually use 30.2 mL of hydrochloric acid solution. Percent error = [(30.2 mL) / (30 mL) - 1] x 100% = 0.667 % error

When you calculate results that are aiming for known values, the percent error formula is useful tool for determining the precision of your calculations. The formula is given by: The experimental value is your calculated value, and the theoretical value is your known value.

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plus and minus signs

It is a measure measurement of the amount of error made in an experiment. It is obtained by comparing the actual result, with the result gotten from the experiment. % error = [(experimental value - true value) / true value] x 100