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Director and writer
Jack Arnold averages 6.31, William Alland averages 5.96. Apart that suggests 6.14; together they average 6.25, a lift of +0.12.
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.
 Creature from the Black Lagoon | 1954 | 6.9 | 39,056 | Director | Writer, Producer |
 Revenge of the Creature | 1955 | 5.6 | 7,859 | Director | Producer, Writer |
| The Lively Set | 1964 | · | 304 | Director | Writer, Producer |
 It Came from Outer Space | 1953 | 6.5 | 13,085 | Director | Producer |
 This Island Earth | 1955 | 5.9 | 11,577 | Director | Producer |
 Tarantula | 1955 | 6.4 | 12,118 | Director, Writer | Producer |
| The Space Children | 1958 | 4.4 | 1,571 | Director | Producer |
