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Design of Experiments Guide > Sample Size Explorers > Confidence Interval Explorers > Statistical Details for the Margin of Error
Publication date: 06/21/2023

Statistical Details for the Margin of Error

The interval calculations for capturing defect counts per unit is based on the exact method using the Χ2 distribution. Note that the interval bounds are not symmetric around the sample estimate.

The interval width is computed as follows:

Equation shown here

The lower bound is computed as follows:

Equation shown here

The upper bound is computed as follows:

Equation shown here

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