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diff --git a/src/main/java/org/apache/commons/math3/stat/descriptive/rank/Median.java b/src/main/java/org/apache/commons/math3/stat/descriptive/rank/Median.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+package org.apache.commons.math3.stat.descriptive.rank;
+
+import java.io.Serializable;
+
+import org.apache.commons.math3.exception.MathIllegalArgumentException;
+import org.apache.commons.math3.exception.NullArgumentException;
+import org.apache.commons.math3.stat.ranking.NaNStrategy;
+import org.apache.commons.math3.util.KthSelector;
+
+
+/**
+ * Returns the median of the available values.  This is the same as the 50th percentile.
+ * See {@link Percentile} for a description of the algorithm used.
+ * <p>
+ * <strong>Note that this implementation is not synchronized.</strong> If
+ * multiple threads access an instance of this class concurrently, and at least
+ * one of the threads invokes the <code>increment()</code> or
+ * <code>clear()</code> method, it must be synchronized externally.</p>
+ *
+ */
+public class Median extends Percentile implements Serializable {
+
+    /** Serializable version identifier */
+    private static final long serialVersionUID = -3961477041290915687L;
+
+    /** Fixed quantile. */
+    private static final double FIXED_QUANTILE_50 = 50.0;
+
+    /**
+     * Default constructor.
+     */
+    public Median() {
+        // No try-catch or advertised exception - arg is valid
+        super(FIXED_QUANTILE_50);
+    }
+
+    /**
+     * Copy constructor, creates a new {@code Median} identical
+     * to the {@code original}
+     *
+     * @param original the {@code Median} instance to copy
+     * @throws NullArgumentException if original is null
+     */
+    public Median(Median original) throws NullArgumentException {
+        super(original);
+    }
+
+    /**
+     * Constructs a Median with the specific {@link EstimationType}, {@link NaNStrategy} and {@link PivotingStrategy}.
+     *
+     * @param estimationType one of the percentile {@link EstimationType  estimation types}
+     * @param nanStrategy one of {@link NaNStrategy} to handle with NaNs
+     * @param kthSelector {@link KthSelector} to use for pivoting during search
+     * @throws MathIllegalArgumentException if p is not within (0,100]
+     * @throws NullArgumentException if type or NaNStrategy passed is null
+     */
+    private Median(final EstimationType estimationType, final NaNStrategy nanStrategy,
+                   final KthSelector kthSelector)
+        throws MathIllegalArgumentException {
+        super(FIXED_QUANTILE_50, estimationType, nanStrategy, kthSelector);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Median withEstimationType(final EstimationType newEstimationType) {
+        return new Median(newEstimationType, getNaNStrategy(), getKthSelector());
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Median withNaNStrategy(final NaNStrategy newNaNStrategy) {
+        return new Median(getEstimationType(), newNaNStrategy, getKthSelector());
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Median withKthSelector(final KthSelector newKthSelector) {
+        return new Median(getEstimationType(), getNaNStrategy(), newKthSelector);
+    }
+
+}