dplyr – Group by and select TOP x %

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  1. Gather multiple sets of columns
  2. How to get summary statistics by group
  3. Is there a dplyr equivalent to data.table::rleid?
  4. Replace NA with previous or next value, by group, using dplyr
  5. Filter rows which contain a certain string
  6. Calculate group mean, sum, or other summary stats. and assign column to original data
  7. Rolling mean (moving average) by group/id with dplyr
  8. Programming with dplyr using string as input
  9. Count number of rows by group using dplyr
  10. Pass a vector of variable names to arrange() in dplyr
  11. Efficient way to filter one data frame by ranges in another
  12. R – add column that counts sequentially within groups but repeats for duplicates
  13. Categorize numeric variable with mutate
  14. Means multiple columns by multiple groups [duplicate]
  15. How to use map from purrr with dplyr::mutate to create multiple new columns based on column pairs
  16. Conditional cumsum with reset
  17. How to speed up subset by groups
  18. Use rle to group by runs when using dplyr
  19. Number of significant digits in dplyr summarise
  20. Calculate group mean while excluding current observation using dplyr
  21. Emulate split() with dplyr group_by: return a list of data frames
  22. R: x ‘probs’ outside [0,1]
  23. dplyr::mutate to add multiple values
  24. Tilde Dot in R (~.)
  25. Changing factor levels with dplyr mutate
  26. How to filter data without losing NA rows using dplyr
  27. Replacement for “rename” in dplyr
  28. How to dplyr rename a column, by column index?
  29. dplyr::do() requires named function?
  30. loess regression on each group with dplyr::group_by()

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