Copyright (c) E.Y.Li 532015/1/15 Quantitative Analysis (3) Commonly Used Statistical Tests Normal-distribution-based test Corresponding nonparametric test Purpose of test t test for independent samples Mann-Whitney U test; Wilcoxon rank-sum test Compares two independent samples Paired t test Wilcoxon matched pairs signed-rank test Examines a set of differences Pearson correlation coefficient Spearman rank correlation coefficient; Kendall Tau; Chi- square test Assesses the linear association between two variables.
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