CREATE TABLE table_70477 ("Year" FLOAT, "Chassis" TEXT, "Engine" TEXT, "Tyres" TEXT, "Points" FLOAT)

What are the average points for an engine of ford zetec-r v8?
SELECT AVG("Points") FROM table_70477 WHERE "Engine" = 'ford zetec-r v8'
SELECT AVG("Points") FROM "table_70477" WHERE "Engine" = 'ford zetec-r v8'