Converts input into a significance test function
test_c(test_custom)
test_custom
a string c("t", "wilcox","ks","var","chisq") or a function.
c("t", "wilcox","ks","var","chisq")
a statistical significance test function.
t.test,wilcox.test, ks.test,var.test, chisq.test
t.test
wilcox.test
ks.test
var.test
chisq.test