Deb - 5 months ago 16

R Question

Here's my data

`z<- c("COP","CHK","BP","BHI","CVX")`

if i do

`sample(z,3,replace=FALSE)`

This will give me 1 unique random sample of 3 from my data set.

I want to find all possible unique samples of 3 from my data set. In this case there will be 10 outcomes.

But how do I write a R code for it?

Please help

Answer

We can use `combn`

to get the unique combinations

```
t(combn(z, 3))
```

If we need to `sample`

it

```
t(combn(sample(z), 3))
```