Easing Into Using the New AutoStats Feature - comment by carrie

Sandeep,
 
There is another blog posting titled Statistics Threshold Functionality 101 that answers your questions.    It provides this explanation:
 
"System threshold:   This is the default approach for applying thresholds for all 14.10 platforms.  The system threshold default is not a single threshold value.  Rather this default approach determines the appropriate threshold for each statistic and considers how much the underlying table has changed since the last collection."
 
Basically, you don't set the system default threshold that controls skipping, it is individually determined by the system.
 
Read that blog for more information.
 
Thanks, -Carrie