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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:39:43                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              228/Trinity                                               VRSN:      W
                                                        228-905/Apple Springs ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,536,442        1.0066             1,526,368              16               97         .090880799
      2           A                1,511,644        0.9892             1,528,148              14               58         .053682783
      3           A                1,559,830        0.8910             1,750,651              12               39         .046560557
      4           A                1,482,838        0.9235             1,605,672              11               20         .029056713
      5           D3               9,824,858        0.9792            10,033,556              20            1,691         .024156678
  RANDOM TOTALS:                  15,915,612                          16,444,395              73            1,905
  CATG J  EXCEPTION VALUES:        1,255,420                           1,376,678
  CATG D1 EXCEPTION VALUES:       13,748,464                          12,819,904
 TOTAL TEST VALUES (4):           30,919,496                          30,640,977
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            1,532,049
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             29,108,928 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              30,919,496 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             32,173,026 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              27,563,192 (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