Hi,
For you first task and use your first row of data as an example. Define a
function named dist to take care of the probability for each group.
> dist <- function(x)
+ {
+
return(c(rep(x[1],15),rep(x[2],15),rep(x[3],25),rep(x[4],20),rep(x[5],25)))
+ }
> plot(ecdf(dist(c(2,3,2,5.3,7.3))))
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