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#0. sample data
#1. t.test
#0. sample data
boxplot(sample_a, sample_b)
#1. t.test
t.test(sample_a, sample_b)
ref : http://www.sthda.com/english/wiki/unpaired-two-samples-t-test-in-r
Unpaired Two-Samples T-test in R - Easy Guides - Wiki - STHDA
Statistical tools for data analysis and visualization
www.sthda.com