পদ্ধতির তুলনা করুন

	শক্তিশালী শক্তি বিশ্লেষণ	পাওয়ার অ্যানালাইসিস (Power Analysis)
ক্ষেত্র	পরিসংখ্যান	পরিসংখ্যান
পরিবার	Hypothesis test	Hypothesis test
উদ্ভবের বছর	1990s–2000s	1969 (1st ed.); 1988 (seminal 2nd ed.)
প্রবর্তক	Rand R. Wilcox and colleagues	Jacob Cohen
ধরন	Power and sample-size planning	Sample size and power planning
মৌলিক উৎস	Luh, W.-M., & Guo, J.-H. (2010). Approximate sample size formulas for the two-sample trimmed mean test with unequal variances. British Journal of Mathematical and Statistical Psychology, 63(1), 83–100.	Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Lawrence Erlbaum Associates. ISBN: 978-0805802832
অপর নাম	power analysis under non-normality, distribution-free power analysis, robust sample-size determination, contamination-robust power	sample size calculation, power calculation, sensitivity analysis, a priori power analysis
সম্পর্কিত	4	5
সারসংক্ষেপ	Robust power analysis computes the statistical power or required sample size for hypothesis tests that use robust estimators — such as trimmed means or Winsorized variances — instead of ordinary means and standard deviations. It protects against inflated or deflated power estimates that arise when data contain outliers, heavy tails, or skewness that violate classical normality assumptions.	Power analysis is a planning and evaluation technique that quantifies the probability of detecting a real effect of a given magnitude at a chosen significance level. It links four quantities — sample size, effect size, significance level (alpha), and statistical power (1 minus beta) — so that researchers can determine the sample size needed before data collection or evaluate the sensitivity of a completed study.