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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:17:35                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              115/Hudspeth                                              VRSN:      W
                                                        115-902/Sierra Blanca ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,433,136        0.9986             1,435,145              11               87         .011998943
      2           A                1,438,000        1.0325             1,392,736              11               45         .007475396
      3           A                1,454,135        0.9856             1,475,380               9               30         .001313445
      4           A                1,372,729        0.9857             1,392,644               7               18         .001155364
      5           C                  824,656        0.9906               832,481               9            1,337         .002881344
      6           C                  957,797        1.0393               921,579              11              664         .020859716
      7           C                  646,016        1.1355               568,926              12              307         .140738418
      8           C                  808,733        1.0030               806,314              11              140         .027659720
      9           D3               5,228,710        0.9011             5,802,586              26            5,898         .076915749
     10           F1                 661,892        0.9455               700,044               7               25         .039388641
     11           F1                 680,690        0.9475               718,406               6               10         .004087236
     12           F1                 722,813        0.9789               738,393               3                4         .000128692
  RANDOM TOTALS:                  16,229,307                          16,784,634             123            8,565
  CATG J  EXCEPTION VALUES:       16,696,210                          16,932,030
  CATG D1 EXCEPTION VALUES:        1,934,275                           5,338,966
  CATG F1 EXCEPTION VALUES:          426,141                             465,384
 TOTAL TEST VALUES (4):           35,285,933                          39,521,014
 MARGIN OF ERROR PERCENT:          5.0000008
 MARGIN OF ERROR VALUE:            1,976,051
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              35,285,933 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             37,544,963 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             41,497,065 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              49,613,493 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES