try {
            BoxAndWhiskerCalculator.calculateQ3(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);

        List values = new ArrayList();
        double q3 = BoxAndWhiskerCalculator.calculateQ3(values);
        assertTrue(Double.isNaN(q3));
        values.add(new Double(1.0));