Ruby Keeler and Busby Berkeley made 5 films together, and the 3 rated ones average 7.40, 0.53 above their career marks. The best is Gold Diggers of 1933 at 7.7.

Ruby Keeler averages 7.00, Busby Berkeley averages 6.74. Apart that suggests 6.87; together they average 7.40, a lift of +0.53.

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