44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
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var vows = require('vows');
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var assert = require('assert');
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var suite = vows.describe('jStat.stdev');
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require('../env.js');
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suite.addBatch({
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'stdev': {
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'topic': function() {
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return jStat;
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},
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'return basic stdev': function(jStat) {
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assert.equal(jStat.stdev([1, 2, 3, 4]), 1.118033988749895);
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},
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'return basic stdev using sample': function(jStat) {
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assert.equal(jStat.stdev([1, 2, 3, 4, 5], true), 1.5811388300841898);
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},
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'stdev from instance': function(jStat) {
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assert.equal(jStat([1, 2, 3, 4]).stdev(), 1.118033988749895);
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},
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'stdev matrix cols': function(jStat) {
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assert.deepEqual(jStat([[1, 2], [3, 4]]).stdev(), [1, 1]);
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}
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},
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'#stdev vector': {
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'topic': function() {
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jStat([1, 2, 3, 4]).stdev(this.callback);
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},
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'stdev callback': function(val, stat) {
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assert.equal(val, 1.118033988749895);
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}
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},
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'#stdev matrix cols': {
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'topic': function() {
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jStat([[1, 2], [3, 4]]).stdev(this.callback);
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},
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'stdev matrix cols callback': function(val, stat) {
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assert.deepEqual(val, [1, 1]);
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}
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}
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});
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suite.export(module);
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