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Director and writer
William Girdler averages 5.42, David Sheldon averages 4.50. Apart that suggests 4.96; together they average 5.45, a lift of +0.49.
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.
| 'Sheba, Baby' | 1975 | 5.7 | 2,312 | Director, Writer | Writer, Producer |
 Grizzly | 1976 | 5.2 | 6,938 | Director | Writer, Producer |
| Project: Kill | 1976 | · | 467 | Director | Writer, Producer |
