What are the movie titles and average rating of the movies with the lowest average rating?
SELECT T2.title ,  avg(T1.stars) FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID  =  T2.mID GROUP BY T1.mID ORDER BY avg(T1.stars) LIMIT 1
Film başlıkları ve en düşük ortalama dereceye sahip filmlerin ortalama derecesi nelerdir?