Keep It Greasey (track) by Frank Zappa
Keep It Greasey appears on the following album(s) by Frank Zappa:
- You Can't Do That On Stage Anymore, Vol. 3 (track #6) (1989)
- Joe's Garage Acts ll & lll (track #5) (1979)
- Joe's Garage Act I, II & III (track #14) (this album) (compilation) (1987)
- Zappa Picks - By Jon Fishman Of Phish (track #9) (compilation) (2002)
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Keep It Greasey ratings
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Outliers can be removed when calculating a mean average to dampen the effects of ratings outside the normal distribution. This figure is provided as the trimmed mean. A high standard deviation can be legitimate, but can sometimes indicate 'gaming' is occurring. Consider a simplified example* of an item receiving ratings of 100, 50, & 0. The mean average rating would be 50. However, ratings of 55, 50 & 45 could also result in the same average. The second average might be more trusted because there is more consensus around a particular rating (a lower deviation).
(*In practice, some tracks can have several thousand ratings)
This track has a mean average rating of 72.0/100. The trimmed mean (excluding outliers) is 72.0/100. The standard deviation for this track is 24.5.
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