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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:36:03                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              207/Schleicher                                            VRSN:      W
                                                        207-901/Schleicher County ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,675,144        0.7433             6,289,713              11              314         .113723601
      2           A                4,688,598        0.7693             6,094,629               9              170         .075199217
      3           A                4,671,881        0.7654             6,103,842               9              105         .005422843
      4           A                4,627,654        0.8763             5,280,902              12               59         .008174958
      5           D3              14,799,560        0.9033            16,383,881              23            4,139         .039212836
      6           G1              33,496,506        0.9611            34,852,259              15              192         .120422291
      7           G1              33,549,296        1.0479            32,015,742              20               76         .013677795
      8           G1              33,559,880        1.0635            31,556,070              27               32         .017699162
  RANDOM TOTALS:                 134,068,519                         138,577,038             126            5,087
  CATG J  EXCEPTION VALUES:        9,200,250                           9,703,950
  CATG D1 EXCEPTION VALUES:       27,321,040                          33,509,196
  CATG G1 EXCEPTION VALUES:       33,251,820                          29,816,970
 TOTAL TEST VALUES (4):          203,841,629                         211,607,154
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           10,580,358
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            201,026,796 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             203,841,629 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            222,187,512 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             259,570,835 (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