calculating the outliers in R

Question

I have a data frame like this:

x

Team 01/01/2012  01/02/2012  01/03/2012  01/01/2012 01/04/2012 SD Mean
A     100         50           40        NA           


        

Answer 1

The following formulas could be used to determine which values are outliers:

upper.outlier.calc <- function(x.var, df){
  with(df, quantile(x.var, 0.75) + (1.5 * (quantile(x.var, 0.75) - quantile(x.var, 0.25))))
}

lower.outlier.calc <- function(x.var, df){
  with(df, quantile(x.var, 0.25) - (1.5 * (quantile(x.var, 0.75) - quantile(x.var, 0.25))))
}