reference group

15 LETTERS · STARTS WITH R

reference group is a valid 15-letter word worth 22 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1E1F4E1R1E1N1C3E1G2R1O1U1P3

1 + 1 + 4 + 1 + 1 + 1 + 1 + 3 + 1 + 0 + 2 + 1 + 1 + 1 + 3 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does reference group mean?