Total Naive Houses Forecast Sold (-12 ) Squared Date (000 ) THS THEF Error Error Jan-03 76 Feb-03 82 Mar-03 98 Apr-03 91 May-03 101 Jun-03 107 Jul-03 99 Aug-03 105 Sep-03 90 Oct-03 8 8 Nov-03 76 Dec-03 75 Jan-04 89 76 13 169 Feb-04 102 82 20 400 Mar-04 123 98 25 625 MSE = 155.83 Apr-04 109 91 18 324 May-04 115 101 14 196 RMSE = 12. 48 Jun-04 105 107 -2 4 Jul-04 96 99 -3 9 Aug-04 102 105 -3 9 Sep-04 94 90 4 16 Oct-04 98 8 8 10 100 Nov-04 79 76 Dec-04 72 75 Jan-05 89 Feb-05 102 Mar-05 123 Apr-05 109 May-05 115 Jun-05 105 Jul-05 96 Aug-05 102 Sep-05 94 Oct-05 98 Nov-05 79 Dec-05 72 In the table above, Total Houses Sold in the United States are forecasted by what method