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Director and writer
David Yates averages 7.17, J.K. Rowling averages 6.91. Apart that suggests 7.04; together they average 6.91, a lift of −0.13.
Lift is the average of their films together minus the mean of their two career averages.
Dot size shows audience votes; lines are rolling five-film averages. Films below the source vote floor are left out.
| 2016 | 7.3 | 20,063 | Director | Writer, Producer | |
| 2018 | 6.8 | 11,725 | Director | Writer, Producer | |
| 2022 | 6.6 | 5,293 | Director | Writer, Producer |
| 2007 | 7.7 | 21,327 | Director | Source author | |
| 2009 | 7.7 | 21,288 | Director | Source author | |
| 2010 | 7.7 | 20,897 | Director | Producer, Source author | |
| 2011 | 8.1 | 22,554 | Director | Producer, Source author |