How many total movie ratings are there?
select count ( * ) from rating
How many of those movies received less than 2 ratings?
select count ( * ) from ( select * from rating group by mid having count ( * ) < 2 )
Of the 14 ratings, what was the highest rating?
select stars from rating order by stars desc limit 1
And the lowest?
select stars from rating order by stars asc limit 1
And the average?
select avg ( stars ) from rating order by stars asc limit 1