How To Find Percent Deviation

Unit Converter

Enter the measured value and the true value into the figurer to determine the percent deviation. This figurer can calculator any of the variables given the others are known.

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Per centum Departure Formula

The following formula is used to calculate a pct deviation.

D =( X_m – Ten_t ) / X_t * 100

Where D is the per centum difference (%)
10_k is the measured value
X_t is the true value

To calculate a percentage divergence, subtract the true value from the measured value, and then divide by the true value, and then multiply past 100.

Percent Departure Definition

A percent departure is defined as the percentage difference between a measured value and a true value.

Percent Difference Example

How to summate pct deviation?

The following example will provide a step-by-step solution on how to calculate the percent difference between a measured value and a true known value. In this case, we will exist looking at the yield of a chemical reaction.

First, determine the measured value in the experiment. In this case, after a chemical reaction occurs, the amount of substance yielded from the reaction is constitute to be 50 grams.

Next, determine the true known value. Through chemical analysis, the truthful expected value of the chemic reaction is known to be 55 grams.

Finally, calculate the percent difference using the formula above:

D =( X_m – X_t ) / Ten_t * 100

D =( fifty – 55) / 55 * 100

D = -9.09 % deviation

In full general, sometimes the absolute value of the deviation is taken so that the result is always positive. The full percentage deviation does non change, only the negative sign turns to a positive.