Because the standard deviation can't be calculated when there is only
one observation the R scripts raises an error. However it may still be
useful to run them for non-statistical purposes.
This changes the behaviour such when there is only one observation, the
values that depends on the standard deviation becomes Not Applicable
(NA).
Fixes: https://github.com/nodejs/node/issues/8288
PR-URL: https://github.com/nodejs/node/pull/8299
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Previously this a tool in `plot.R`. It is now are more complete tool
which executes the benchmarks many times and creates a boxplot.
PR-URL: https://github.com/nodejs/node/pull/7094
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
