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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:37:27                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              219/Swisher                                               VRSN:      W
                                                        219-901/Happy ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,651,779        0.8243             2,003,857               7               98         .016613004
      2           A                1,675,042        0.8691             1,927,329               6               49         .021699705
      3           A                1,651,105        0.8899             1,855,383               6               31         .005464761
      4           A                1,594,327        0.9059             1,759,937               5               20         .053155610
      5           D3              11,653,098        0.9349            12,464,540              11            1,321         .028079402
      6           L1                 369,037        1.0000               369,037               6               32
      7           L1                 379,685        0.9828               386,330               4               11         .001304793
      8           L1                 469,593        1.0000               469,593               3                5
  RANDOM TOTALS:                  19,443,666                          21,236,006              48            1,567
  CATG J  EXCEPTION VALUES:        6,247,103                           6,073,434
  CATG D1 EXCEPTION VALUES:       19,013,086                          16,625,949
  CATG L1 EXCEPTION VALUES:          164,645                             145,649
 TOTAL TEST VALUES (4):           44,868,500                          44,081,038
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:            2,204,052
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             41,876,986 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              44,868,500 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             46,285,090 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              55,986,414 (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