Process / pipelineIntercoder reliability coefficients
Scott's Pi
Scott's pi is a chance-corrected coefficient of intercoder agreement for two coders working on a nominal scale, introduced by William Scott in 1955 specifically for content analysis. It improves on raw percent agreement by subtracting the agreement two coders would reach by chance, where chance is estimated from a single pooled distribution of categories shared by both coders rather than from each coder's separate marginals.
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出典
- Scott, W. A. (1955). Reliability of content analysis: The case of nominal scale coding. Public Opinion Quarterly, 19(3), 321–325. DOI: 10.1086/266577 ↗
- Cohen, J. (1960). A coefficient of agreement for nominal scales. Educational and Psychological Measurement, 20(1), 37–46. DOI: 10.1177/001316446002000104 ↗
- Krippendorff, K. (2004). Content Analysis: An Introduction to Its Methodology (2nd ed.). Thousand Oaks, CA: Sage. ISBN: 9780761915454
このページの引用方法
ScholarGate. (2026, June 22). Scott's Pi Intercoder Reliability Coefficient. ScholarGate. https://scholargate.app/ja/communication/scott-pi-reliability
どの手法を選ぶ？
この手法を最も近い類縁の手法と並べ、両者を見比べてください — ライブラリは本を机の上に並べるだけ。選ぶのはあなたです。
- Holsti's MethodCommunication↔ 比較
- Intercoder ReliabilityCommunication↔ 比較
- Krippendorff's AlphaCommunication↔ 比較
- Manifest Content AnalysisCommunication↔ 比較