Shared credits
William Stack averages 6.23, Fredric March averages 7.04. Apart that suggests 6.64; together they average 6.30, a lift of −0.33.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows IMDb votes; lines are rolling five-film averages. Films with fewer than 1,000 votes are left out.
| Sarah and Son | 1930 | · | 395 | as Cyril Belloc | as Howard Vanning |
| Mary of Scotland | 1936 | 6.3 | 3,059 | as Ruthven | as Earl of Bothwell |
