Sample Size & Power Calculator

📊 關鍵指標

📈 檢定力曲線

下圖顯示在當前效應量與顯著水準下，檢定力如何隨樣本量變化。金點為當前設計位置。

🧭 結果解讀

💡 建議

📚 計算依據

• Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Lawrence Erlbaum.
• Fleiss, J. L., Levin, B., & Paik, M. C. (2003). Statistical Methods for Rates and Proportions.
• Fisher, R. A. (1921). On the "probable error" of a coefficient of correlation deduced from a small sample.
• Faul, F., Erdfelder, E., Lang, A.-G., & Buchner, A. (2007). G*Power 3. Behavior Research Methods.