Coursera Statistical Inference Spring 2017 - Allen vs Coen(s) (#2708)

Author(s) Created: 01/29/2017 05:26 PM (PT) Michael Lewitter (Coursera) - [email protected] Public: 01/29/2017 05:30 PM (PT)

1) What's the main question being asked or hypothesis being tested in this study? Many directors have a dedicated cult following. In particular, are Joel and Ethan Coen (aka the Coen Brothers) and Woody Allen have received many accolades. Both examine the human condition, but have very different takes on their cinematic and directorial style. Do audiences interested in this subject matter prefer one director over the other?

2) Describe the key dependent variable(s) specifying how they will be measured. I will evaluate this based on the IMDb rating (not metascore) of the filmmakers’ complete English-language feature-length non-TV-film filmography with director credit.

3) How many and which conditions will participants be assigned to? Two groups: films directed by Woody Allen, and films directed by the Coen brothers (Joel Coen has traditionally taken the director credit for their films).

4) Specify exactly which analyses you will conduct to examine the main question/hypothesis. I will use a two one-sided t-test (TOST) procedure to test for equivalence with bounds of -0.8 and +0.8. I will use alpha = 0.05, and a 90% CI.

5) Any secondary analyses? No.

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. I will use the IMDb rating (not metascore) of the filmmakers’ complete English-language feature-length non-TV-film filmography where they have a director credit. For the Coen brothers, they both need to have worked on the film in some credited capacity, but only one of them requires a director credit. Projects in which the filmmaker only directed a segment of the feature are excluded. This results in 46 films for Allen and 17 films for the Coen brothers.

7) Anything else you would like to pre-register? (e.g., data exclusions, variables collected for exploratory purposes, unusual analyses planned?) No.

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/rr6dq.pdf Version of AsPredicted Questions: 1.05 (Permanently archived at http://web.archive.org/web/*/https://aspredicted.org/rr6dq.pdf)