For challenge 3 the 30% data includes the 15% from round1? or is it a completely different set of data. Is this randomly chosen?
Created by exquirentibus veritatem exquirentibus It contains the 15%. Yuanfang Guan is correct that is will contain it. it's more appropriate to remove. but, they will be included. A follow up question would be: whether the final round is determined by 100% of the samples including the 30% (and 15%) from Round 1 and 2, or excluding them?