Irwin Keyes and Joseph Barbera made 2 films together, averaging 4.45, 0.18 below their career marks. The best is The Flintstones at 5.1.

Irwin Keyes averages 4.81, Joseph Barbera averages 4.45. Apart that suggests 4.63; together they average 4.45, a lift of −0.18.

Lift is the average of their films together minus the mean of their two career averages.