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Percent error

Compare a measured value with a nonzero reference.

How this works

Absolute percent error = |measured−reference|/|reference| × 100.

Example

Using the example inputs, absolute percent error (%) is 2.

Measured value
98
Reference value
100
Absolute percent error (%)
2

Scope and assumptions

Uses your inputs only; results are rounded for display.

OpenStax mathematics

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