Statistics/Basic: Difference between revisions

=={{header|Jsish}}==

<lang javascript>#!/usr/bin/env jsish

"use strict";

function statisticsBasic(args:array|string=void, conf:object=void) {

var options = { // Rosetta Code, Statistics/Basic

rootdir :'', // Root directory.

samples : 0 // Set sample size from options

};

var self = { };

parseOpts(self, options, conf);

function generateStats(n:number):object {

var i, sum = 0, sum2 = 0;

var hist = new Array(10);

hist.fill(0);

for (i = 0; i < n; i++) {

var r = Math.random();

sum += r;

sum2 += r*r;

hist[Math.floor((r*10))] += 1;

}

var mean = sum/n;

var stddev = Math.sqrt((sum2 / n) - mean*mean);

var obj = {n:n, sum:sum, mean:mean, stddev:stddev};

return {n:n, sum:sum, mean:mean, stddev:stddev, hist:hist};

}

function reportStats(summary:object):void {

printf("Samples: %d, mean: %f, stddev: %f\n", summary.n, summary.mean, summary.stddev);

var max = Math.max.apply(summary, summary.hist);

for (var i = 0; i < 10; i++) {

printf("%3.1f+ %-70s %5d\n", i * 0.1, 'X'.repeat(70 * summary.hist[i] / max), summary.hist[i]);

}

return;

}

function main() {

LogTest('Starting', args);

switch (typeof(args)) {

case 'string': args = [args]; break;

case 'array': break;

default: args = [];

}

if (self.rootdir === '')

self.rootdir=Info.scriptDir();

Math.srand(0);

if (self.samples > 0) reportStats(generateStats(self.samples));

else if (args[0] && parseInt(args[0])) reportStats(generateStats(parseInt(args[0])));

else for (var n of [100, 1000, 10000]) reportStats(generateStats(n));

debugger;

LogDebug('Done');

return 0;

}

return main();

}

provide(statisticsBasic, 1);

if (isMain()) {

if (!Interp.conf('unitTest'))

return runModule(statisticsBasic);

;' statisticsBasic unit-test';

; statisticsBasic();

}

/*

=!EXPECTSTART!=

' statisticsBasic unit-test'

statisticsBasic() ==> Samples: 100, mean: 0.534517, stddev: 0.287124

0.0+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 8

0.1+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 11

0.2+ XXXXXXXXXXXXXXXXXXXXXXXXXX 6

0.3+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 10

0.4+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 10

0.5+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 11

0.6+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 8

0.7+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 16

0.8+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7

0.9+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 13

Samples: 1000, mean: 0.490335, stddev: 0.286562

0.0+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 98

0.1+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 122

0.2+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 85

0.3+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 106

0.4+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 105

0.5+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 101

0.6+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 93

0.7+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 106

0.8+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 98

0.9+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 86

Samples: 10000, mean: 0.499492, stddev: 0.287689

0.0+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 969

0.1+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 992

0.2+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 1067

0.3+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 1011

0.4+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 973

0.5+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 1031

0.6+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 971

0.7+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 999

0.8+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 991

0.9+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 996

0

=!EXPECTEND!=

*/</lang>

{{out}}

<pre>prompt$ jsish -u statisticsBasic.jsi

[PASS] statisticsBasic.jsi</pre>