### Question:
Statistics { public static double[] getDoubleArray(Object numberArray) { return getDoubleArray(numberArray, true); } Statistics();  Statistics(Object numberArray);  Statistics(Object numberArray, boolean signed);  Statistics(double[] numberArray); static double[] getDoubleArray(Object numberArray); static double[] getDoubleArray(Object numberArray, boolean signed); static Statistics of(int samples, double max, double min,
            double mean, double median, double lowerQuartile,
            double upperQuartile, int uniques); int getSamples(); double getMax(); double getMin(); double getMean(); double getMedian(); double getMidrange(); double getRange(); double getLowerQuartile(); double getUpperQuartile(); int getUniques(); double getIqr(); @Override String toString();  }### Answer:
@Test public void testGetDoubleArrayDouble() { double[] expecteds = { 3.0, 1.0, 5.5, -3.8, Math.PI }; Object input = expecteds; double[] actuals = Statistics.getDoubleArray(input); assertFalse(expecteds == actuals); assertArrayEquals(expecteds, actuals, 0.000000001); }