How to detriment if your sample statistics is suitable

To detriment if your sample statistics is or not (TD 12) you may need to make a HELP STATISTICS statement on you table or column twice, one with full stats and the other after applying the sampling and see the difference

1- To make a help stats on table level:

HELP STATISTICS "tablename";


2- To make a help stats on Column level:

HELP STATISTICS "tablename" Column "columnname";