Do Comedy Movies Have Lower Ratings Than Drama Movies on the Imdb Database (#2407)
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Do comedy movies have lower ratings than drama movies on the IMDb database (#2407) Author(s) Created: 12/19/2016 06:15 AM (PT) Zoe Woodhead (University of Oxford) - [email protected] Public: 12/19/2016 08:17 AM (PT) 1) What's the main question being asked or hypothesis being tested in this study? People vary in what they find funny, therefore I predict that comedies have lower average IMDb ratings than dramas. H0 = Comedy films do not have lower average IMDb ratings than dramas H1= Comedy films have lower average IMDb ratings than dramas. 2) Describe the key dependent variable(s) specifying how they will be measured. The dependent variable will be the average IMDb rating out of 10 for comedy and drama films. I will collect data by sampling movies from the lists of highest rated comedy/drama feature films with at least 25000 votes, ordered by descending IMDb rating. 3) How many and which conditions will participants be assigned to? Two conditions: comedy and drama films. In order to sample from a distribution of ratings (not just the highest rated) I will sample the 1st, 11th, 21st, 31st etc. film from each list until I reach my desired sample size. 4) Specify exactly which analyses you will conduct to examine the main question/hypothesis. I will use a 1-tailed independent t-test to compare the ratings of the comedy and drama films, and I will judge that my hypothesis is confirmed if the test is significant to p<.05. 5) Any secondary analyses? 6) How many observations will be collected or what will determine sample size? No need to justify decision, but be precise about exactly how the number will be determined. As I have a directional hypothesis (dramas will have higher ratings than comedies) I will use a 1-tailed statistical test. I will set alpha to .05 and I will aim for a power of 0.8. To have adequate power to detect a medium effect size (d=0.5) I will need to sample 51 films from each category. 7) Anything else you would like to pre-register? (e.g., data exclusions, variables collected for exploratory purposes, unusual analyses planned?) 8) Have any data been collected for this study already? No, no data have been collected for this study yet Available at https://aspredicted.org/9bmmu.pdf Version of AsPredicted Questions: 1.05 (Permanently archived at http://web.archive.org/web/*/https://aspredicted.org/9bmmu.pdf).