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Filter in R Language

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Before you intend to do an operation, you can filter the dataset. The dataset starts in 1871, and the analysis does not need the years prior to 1980.

# Filter
data % > %
	filter(yearID > 1980) % > %
	group_by(yearID) % > %
	summarise(mean_game_year = mean(G))

Code Explanation

  • filter(yearID > 1980): Filter the data to show only the relevant years (i.e. after 1980)
  • group_by(yearID): Group by year
  • summarise(mean_game_year = mean(G)): Summarize the data
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