@Test
 public void testSummaryStatistics() {
   double arr[] = {3.0, 10.2, -20.4, -1.0, -5.3, 1.0, -5.1};
   TemperatureSeriesAnalysis tsa = new TemperatureSeriesAnalysis(arr);
   TempSummaryStatistics tss = tsa.summaryStatistics();
   double average = tsa.average();
   assertEquals(average, tss.getAvgTemp(), 0.001);
 }
 @Test
 public void testTemperatureSeriesAnalysis() {
   TemperatureSeriesAnalysis temperatureSeriesAnalysis = new TemperatureSeriesAnalysis();
   TempSummaryStatistics tss = temperatureSeriesAnalysis.summaryStatistics();
   assertTrue(
       tss.getAvgTemp() == tss.getMinTemp()
           && tss.getAvgTemp() == tss.getMaxTemp()
           && tss.getAvgTemp() == tss.getDevTemp());
 }