The different quantile interpolation methods. See: https://stat.ethz.ch/R-manual/R-devel/library/stats/html/quantile.html
R quantile type 1
R quantile type 2
R quantile type 3
R quantile type 4
R quantile type 5
R quantile type 6
R quantile type 7
R quantile type 8
R quantile type 9
See Implementation
The different quantile interpolation methods. See: https://stat.ethz.ch/R-manual/R-devel/library/stats/html/quantile.html