CREATE TABLE table_80001 ("Name" TEXT, "GP-GS" TEXT, "Effic" FLOAT, "Att-Cmp-Int" TEXT, "Avg/G" FLOAT)

Avg/G of 2.7 is what effic?
SELECT "Effic" FROM table_80001 WHERE "Avg/G" = '2.7'
SELECT "Effic" FROM "table_80001" WHERE "Avg/G" = '2.7'