1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.math4.legacy.stat.inference;
18
19 /**
20 * Represents an alternative hypothesis for a hypothesis test.
21 *
22 * @since 3.3
23 */
24 public enum AlternativeHypothesis {
25
26 /**
27 * Represents a two-sided test. H0: p=p0, H1: p ≠ p0
28 */
29 TWO_SIDED,
30
31 /**
32 * Represents a right-sided test. H0: p ≤ p0, H1: p > p0.
33 */
34 GREATER_THAN,
35
36 /**
37 * Represents a left-sided test. H0: p ≥ p0, H1: p < p0.
38 */
39 LESS_THAN
40 }