Stratified sampling
| Paper | Question Topic | Written Solution | Video Solution |
|---|---|---|---|
| 2009-11-10 EdExcel 1380-4H | Q24 Stratified sampling | Yes | No |
| 2010-11-09 EdExcel 1380-3H | Q25 Stratified sampling | No | No |
| 2011-06-11 EdExcel 1380-4H | Q22 Stratified sampling | No | Yes |
| 2013-03-04 EdExcel 1MA0-2H | Q23 Stratified sampling | No | Yes |
| 2013-06-14 EdExcel 1MA0-2H | Q21 Stratified sampling | No | Yes |
| 2013-11-08 EdExcel 1MA0-2H | Q23 Stratified sampling | No | Yes |
| 2014-06-13 EdExcel 1MA0-2H | Q23 Stratified sampling | No | Yes |