Hello,
I would like to cut my 70% vs 30% dataset to have a learning dataset and a test dataset for my statistical models
I use this method:
![Emma1_0-1628866834288.png Emma1_0-1628866834288.png](https://community.jmp.com/t5/image/serverpage/image-id/35000i228BDF94EFCFEDD1/image-size/medium?v=v2&px=400)
And I change the 0.7 in 0.3 to have 30%
However when I do that, the dataset does not separate into two parts: 70% vs 30%, it takes 70% then 30%
This means that in the dataset 30% there may be data from the dataset containing 70%
Is there a way to cut into two parts the dataset: 70 vs 30% without having the same type of data in both parts?
Thank you