Stratified random sampling - random samples are taken from within certain categories. Stratified systematic sampling - regular samples are taken from within certain categories.

Detailed price information for First Andes Silver Ltd (MSLVF) from The Globe and Mail including charting and trades.

FIRST ANDES SILVER LTD. (TSXV: FAS) (OTC Pink: MSLVF) (FSE: 9TZ0) ("First Andes" or the "Company") today announced that it has completed ...