This package provides a single class which computes things like standard deviation and margin of error. It should be useful whenever you have a list of numerical values and you want to:
- show simple stats like mean, min and max, or
- find out the confidence interval (at the standard 95% confidence level), or
- confirm relationship to other measurements.
A simple usage example:
var myStat = new Statistic.from(myMeasurements, name: "My scores"); // Prints the most basic stats. print(myStat); var otherStat = new Statistic.from(otherMeasurements); // Prints true only if stats are different with statistical significance. print(myStat.isDifferentFrom(otherStat));
You can install the simple binary by running the following in the command line:
pub global activate t_stats
Now you can use t_stats as a command line tool. Assuming there's a
file that contains a line-delimited list of numbers, you can run:
$ t_stats --pretty < numbers.txt 2.11 ± 2.48 MoE / 3.22 SD
This takes full advantage of POSIX pipes, so you can have things like:
$ <some_complicated_unix_command> | t_stats --pretty 9.88 ± 12.21 MoE / 23.75 SD
If you don't provide the
--pretty argument, the tool will print out
the output of
Statistic.toTSV() (less human-readable, but much more
useful for comparing multiple sets of measurements).
Features and bugs
Please file feature requests and bugs at the issue tracker.
- Support for simple t-statistics on lists of numbers.