001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.statistics.inference;
018
019/**
020 * Represents a method for computing a p-value for a test statistic.
021 *
022 * @since 1.1
023 */
024public enum PValueMethod {
025    /**
026     * Automatically choose the method to evaluate the p-value.
027     *
028     * <p>The choice will use heuristics based on the input data.
029     */
030    AUTO,
031
032    /**
033     * Use the exact distribution of the test statistic to evaluate the p-value.
034     */
035    EXACT,
036
037    /**
038     * Use the asymptotic distribution of the test statistic to evaluate the p-value.
039     */
040    ASYMPTOTIC,
041
042    /**
043     * Use an estimation method for the p-value.
044     * For example this may use random sampling or permutations.
045     */
046    ESTIMATE
047}