CREATE TABLE "michigan_88_ferris_institute_0" (
  "player" text,
  "position" text,
  "starter" text,
  "touchdowns" real,
  "extra_points" real,
  "field_goals" real,
  "points" real
);

Question: What is the average number of field goals scored by a right halfback who had more than 3 touchdowns?
SQL: SELECT AVG("field_goals") FROM "michigan_88_ferris_institute_0" WHERE "position"='right halfback' AND "touchdowns">3;