@FXML
	    void displayData(ActionEvent event) {
		  ArrayList<Integer> numofDelays=new ArrayList<Integer>();
		  ArrayList<Integer> timeofDelays= new ArrayList<Integer>();
		  Integer sumofNumDelays=0,sumofDelayTime=0,countNumDelays=1,countDelayTime=1;
		  Integer arr[];
		  if(cmbSystem.getSelectionModel().isEmpty())
			  lblsytstemerr.setVisible(true);
		  else {
			  lblsytstemerr.setVisible(false);
			  switch(cmbSystem.getSelectionModel().getSelectedItem()) {
			  case "Braude Website":
				  for(Map.Entry<String, Integer> entry : daysOfDelay.entrySet())
					  if(entry.getKey().equals("Braude Website"))
						  numofDelays.add(entry.getValue());
				  Collections.sort(numofDelays);
					  if(((numofDelays.size())%2)==0)
					  {
						  Integer avg1=(Math.addExact(numofDelays.get(numofDelays.size()/2-1), numofDelays.size()/2)/2);
						  lblMedianNumDelays.setText(avg1.toString());
					  }
					  else
						  lblMedianNumDelays.setText(numofDelays.get(numofDelays.size()/2).toString());
					  for(Integer val : numofDelays)
						  sumofNumDelays+=val;
					  Double standardDiviation=(double)(sumofNumDelays/numofDelays.size());
					  lblstandarddeviationNumDelays.setText(standardDiviation.toString());
					  arr=new Integer[numofDelays.size()];
					  arr=(Integer[]) numofDelays.toArray();
					  for(int i=1; i<arr.length;i++)
					  {
						  if(arr[i-1]==arr[i])
							  countNumDelays++;
						  else
						  {
							  tblFrequencyDistributionnumdelays.getItems().add(new FrequencyDistribution(arr[i-1], countNumDelays));
							  countNumDelays=1;
						  }
					  }
					  for(Map.Entry<String, Integer> entry: timeOfDelay.entrySet())
						  if(entry.getKey().equals("Braude Website"))
							  timeofDelays.add(entry.getValue());
					  Collections.sort(timeofDelays);
					  if(((timeofDelays.size())%2)==0)
					  {
						  Integer avg2=(Math.addExact(timeofDelays.get(timeofDelays.size()/2-1), timeofDelays.size()/2)/2);
						  lblMedianDelayTime.setText(avg2.toString());
					  }
					  else
						  lblMedianDelayTime.setText(timeofDelays.get(timeofDelays.size()/2).toString());
					  for(Integer val : timeofDelays)
						  sumofDelayTime+=val;
					  Double standardDiviation2=(double)(sumofDelayTime/timeofDelays.size());
					  lblstandarddeviationDelayTime.setText(standardDiviation2.toString());
					  arr=new Integer[timeofDelays.size()];
					  arr=(Integer[])timeofDelays.toArray();
					  for(int i=1; i<arr.length;i++)
					  {
						  if(arr[i-1]==arr[i])
							  countDelayTime++;
						  else
						  {
							  tblFrequencyDistributiontimedelay.getItems().add(new FrequencyDistribution(arr[i-1], countDelayTime));
							  countDelayTime=1;
						  }
					  }
					  break;
				  }
			  }

		  }
	    }