Get the Min, Max, Median, and Mean of a Dataset By awk

calculate.awk

#!/usr/bin/env awk -f
# Get the Min, Max, Median, and Mean of a Dataset
NR==1 { max=$1; min=$1 }
{ 
    sum += $1
    sumsq += ($1)^2
    $1 < min ? min = $1 : 0
    $1 > max ? max = $1 : 0
}
END {
    if (NR == 0) exit  #To avoid division by zero
 
    mean = sum/NR
    sd = sqrt(sumsq/NR - mean^2)

    #Let's beautify the output
    printf \
        "min = %s, max = %s,mean = %s, standard deviation = %s\n",\
        min,\
        max,\
        mean,\
        sd
}