Method evidence record

Sn and Qn Scale Estimators

Sn and Qn are robust estimators of scale (spread) proposed by Rousseeuw and Croux (1993) as alternatives to the median absolute deviation (MAD). Both attain a 50% breakdown point while delivering higher statistical efficiency than MAD, so they measure dispersion accurately even when the data contain outliers.

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Sn and Qn Robust Scale Estimators

Taxonomic method record · regression-model / statistics

Rousseeuw, P. J., & Croux, C. (1993). Alternatives to the Median Absolute Deviation. Journal of the American Statistical Association, 88(424), 1273-1283. · DOI 10.1080/01621459.1993.10476408

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Related methods

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Same method familyBreakdown Point Analysismachine-suggested · Relational suggestion, not evidence.Same method familyMAD Estimationmachine-suggested · Relational suggestion, not evidence.Same method familyPermutation Testmachine-suggested · Relational suggestion, not evidence.Same method familyQuantile Regressionmachine-suggested · Relational suggestion, not evidence.Same method familyRobust Mixed Modelmachine-suggested · Relational suggestion, not evidence.