stats is a command-line utility to perform some simple statistical analyses.

The tool is organized into subcommands that are run using stats [cmd].

go get -u github.com/cespare/stats

See stats [cmd] -h to read more about a particular command, or keep reading.

stats summarize provides summary statistics over a sequence of numbers. It reads from filenames or, if none are given, from stdin.

$ stats summarize
111
105
107
93
99
104
count            7
min              93
max              111
mean             102.71428571428571
std. dev.        5.469768491164756
quantile 0.5     104
quantile 1.9     107
quantile 0.99    111

stats summarize can also draw you a histogram if you give it the -hist flag. -buckets N controls the number of buckets in the histogram. (Note: the histogram is rendered in your terminal using box-drawing characters and so the way it looks depends on your terminal emulator and font.)