Computes the trimean of a numeric array.
The trimean (or Tukey's trimean) is defined as the weighted average of a distribution's median and its two quartiles. The statistic measures a probability distribution's location and is a statistically resistant L-estimator, having a breakdown point of 25%. The statistic combines the robustness of the median, while accounting for a distribution's shape.
$ npm install compute-trimean
For use in the browser, use browserify.
To use the module,
var trimean = ;
trimean( arr[, opts] )
Computes the trimean of a numeric
var unsorted = 5 8 9 1 7 6 2 ;var tri = ;// returns 5.5
If the input
array is already
sorted in ascending order, set the
sorted options flag to
var sorted = 1 2 5 6 7 8 9 ;var tri = ;// returns 5.5
Additional options are the same as for the quantile module and only apply when computing the first and third quartiles.
var data = 100 ;for var i = 0; i < datalength; i++data i = Math;console;
To run the example code from the top-level application directory,
$ node ./examples/index.js
Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:
$ make test
All new feature development should have corresponding unit tests to validate correct functionality.
This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
$ make test-cov
Istanbul creates a
./reports/coverage directory. To access an HTML version of the report,
$ make view-cov
Copyright © 2014. Rebekah Smith.