SRS

Noun

 * , a sample chosen from a population so that any sample of the same size could have equally likely been chosen.
 * , a sample chosen from a population so that any sample of the same size could have equally likely been chosen.
 * , a sample chosen from a population so that any sample of the same size could have equally likely been chosen.

Proper noun

 * , the Serbian Radical Party (a political party in the Republic of Serbia)