User blog comment:Texas Snyper/Elo Hell and You: Part 1 - The Impassable Barrier/@comment-61.69.2.85-20110830070500/@comment-3014924-20110901120115

If you join with 5 solo queue players, they will usually be very very close to your ELO (unless you're in a very high or very low bracket).

If you get some at +/-100, 200 ELO, then you have a duo-queue in the team

(e.g. ELO 800 plays with friend ELO 1200, rest of team at ELO 1000)