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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:59:14                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              125/Jim Wells                                             VRSN:      W
                                                        125-903/Orange Grove ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                7,136,778        0.9824             7,264,636               9              276         .003122013
      2           A                7,167,872        0.9718             7,375,872               8              130         .008457528
      3           A                7,133,801        0.9622             7,414,052               8               72         .002701890
      4           A                7,088,388        0.9748             7,271,633               7               41         .004792584
      5           D3              69,853,894        0.9470            73,763,352              25            6,063         .003836387
  RANDOM TOTALS:                  98,380,733                         103,089,545              57            6,582
  CATG J  EXCEPTION VALUES:        5,309,200                           5,326,225
  CATG D1 EXCEPTION VALUES:       10,096,435                          10,541,847
 TOTAL TEST VALUES (4):          113,786,368                         118,957,617
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:            5,947,881
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            113,009,736 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             113,786,368 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            124,905,498 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             121,450,477 (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