So sánh phương pháp

	Tương quan Spearman mạnh mẽ	Kiểm định t mẫu độc lập mạnh mẽ
Lĩnh vực	Thống kê	Thống kê
Họ	Hypothesis test	Hypothesis test
Năm ra đời	1990s–2000s	1974–1990s
Người khởi xướng	Rand R. Wilcox (robust extensions); Charles Spearman (base method, 1904)	Rand R. Wilcox; Karen K. Yuen (trimmed-mean form)
Loại	Robust nonparametric correlation	Robust parametric mean comparison
Công trình gốc	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838
Tên gọi khác	Winsorized Spearman correlation, robust rank correlation, trimmed Spearman correlation, outlier-resistant Spearman	Yuen's t-test, trimmed-mean t-test, Winsorized t-test, robust two-sample test
Liên quan	5	2
Tóm tắt	Robust Spearman correlation is an outlier-resistant measure of monotonic association between two variables. It applies robustification strategies — such as Winsorizing extreme ranks or using the percentage-bend approach — to protect Spearman's rho against distortion from outliers or heavy-tailed distributions, while retaining its nonparametric rank-based character.	The robust independent samples t-test compares the central tendency of two independent groups using trimmed means and Winsorized variances, making it substantially less sensitive to outliers and non-normality than the classical Student or Welch t-test. The most widely used form is Yuen's test, which also accommodates unequal variances across groups.