כיצד לחשב את Percent Error Calculator
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Percent error measures the accuracy of an experimental or measured value compared to an accepted or theoretical value. It expresses the discrepancy as a percentage, making it easy to compare errors across different scales and units.
מדריך שלב אחר שלב
- 1Percent error = |Experimental − Theoretical| / |Theoretical| × 100%
- 2The absolute value removes the sign — percent error is always positive
- 3Signed percent error indicates direction: positive = measured too high, negative = too low
- 4Used in chemistry, physics, engineering, and manufacturing quality control
Worked Examples
קלט
Measured density: 9.7 g/cm³, True density: 10.0 g/cm³
תוצאה
3.0% error
|9.7−10| / 10 × 100 = 3%
קלט
Predicted 50, actual 47
תוצאה
6.0% error
|50−47| / 47 × 100 = 6.38%