Use when comparing a theoretical (known) value to an experimental (measured) value.
| Theoretical Value | Experimental Value | Percent Error | |||
| % |
(Enter values into the blue boxes. Answer will appear in the black box.)
Answers are rounded to 7 decimal places.
Example 1:
A measured value is 45.6
The actual value is 46.0
What is the percent error between the measured and actual values?
Theoretical (actual) Value = 46.0
Experimental (measured) Value = 45.7
Percent Error = 0.65%
Example 2:
An estimate is made and its value is 115
The actual value is 95
What is the percent error between the estimate and actual value?
Theoretical (actual) Value = 95
Experimental (estimated) Value = 115
Percent Error = 21%
Example 3:
The number 2.7 has been rounded up to 3
What is the percent error between the rounded number and the actual number?
Theoretical (actual) Value = 2.7
Experimental (rounded) Value = 3
Percent Error = 11%