What is the average rating star for each reviewer?
SELECT T2.name ,  avg(T1.stars) FROM Rating AS T1 JOIN Reviewer AS T2 ON T1.rID  =  T2.rID GROUP BY T2.name
SELECT T2.name ,  avg(T1.stars) FROM Rating AS T1 JOIN Reviewer AS T2 ON T1.rID  =  T2.rID GROUP BY T2.name
[{'name': 'Ashley White', 'avg(T1.stars)': 3.0}, {'name': 'Brittany Harris', 'avg(T1.stars)': 2.6666666666666665}, {'name': 'Chris Jackson', 'avg(T1.stars)': 3.0}, {'name': 'Daniel Lewis', 'avg(T1.stars)': 4.0}, {'name': 'Elizabeth Thomas', 'avg(T1.stars)': 4.0}, {'name': 'James Cameron', 'avg(T1.stars)': 5.0}, {'name': 'Mike Anderson', 'avg(T1.stars)': 3.0}, {'name': 'Sarah Martinez', 'avg(T1.stars)': 3.0}]