> c <- c(1.01,1.02,1.03,1.04,1.05,1.06,1.07,1.08,1.09,1.1)
> d <- c(1.5, 1.51,1.52,1.53,1.54,1.55,1.56,1.57,1.58,1.59, 1.6)
> wilcox.test(c,d)

	Wilcoxon rank sum test

data:  c and d
W = 0, p-value = 5.67e-06
alternative hypothesis: true location shift is not equal to 0

> cliff.delta(c,d)

Cliff's Delta

delta estimate: -1 (large)
95 percent confidence interval:
inf sup
NaN NaN
>