Unrepresentative most nearly means: 

atypical

Explanation

Unrepresentative is not exemplifying a class; "I soon tumbled to the fact that my weekends were atypical"; "behavior quite unrepresentative (or atypical) of the profession".

Atypical is deviating from or not conforming to type; "atypical behavior..not the accepted type of response that we expect from children"- G.E.Gardner.

Visit our website for other ASVAB topics now!