/** * @license Apache-2.0 * * Copyright (c) 2018 The Stdlib Authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ 'use strict'; /** * One-way analysis of variance. * * @module @stdlib/stats/anova1 * * @example * var anova1 = require( '@stdlib/stats/anova1' ); * var x = [ 1, 3, 5, 2, 4, 6, 8, 7, 10, 11, 12, 15 ]; * var f = [ 'control', 'treatA', 'treatB', 'treatC', 'control', 'treatA', 'treatB', 'treatC', 'control', 'treatA', 'treatB', 'treatC' ]; * * var out = anova1( x, f ); * /* returns * { * 'treatment': { * 'df': 3, * 'ss': ~20.667, * 'ms': ~6.889 * } * 'error': { * 'df': 8, * 'ss': ~185.333, * 'ms': ~23.1667, * }, * 'statistic': ~0.297, * 'pValue': ~0.826, * 'means': { 'control': { 'mean': 5.0, 'sampleSize': 3, 'SD': ~4.583 }, * 'treatA': { 'mean': ~6.667, 'sampleSize': 3, 'SD': ~4.041 }, * 'treatB': { 'mean': ~8.333, 'sampleSize': 3, 'SD': ~3.512 }, * 'treatC': { 'mean': 8.0, 'sampleSize': 3, 'SD': ~6.557 } * }, * 'method': 'One-Way ANOVA' * } * *\/ * * var table = out.print(); * /* * One-Way ANOVA * * Null Hypothesis: All Means Equal * Alternate Hypothesis: At Least one Mean not Equal * * df SS MS F Score P Value * Treatment 3 20.6667 6.8889 0.2974 0.8265 * Errors 8 185.3333 23.1667 * * Fail to Reject Null: 0.8265 >= 0.05 * * *\/ */ // MODULES // var anova1 = require( './anova1.js' ); // EXPORTS // module.exports = anova1;