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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:18:51                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              122/Jeff Davis                                            VRSN:      W
                                                        122-901/Fort Davis ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               13,451,329        0.9629            13,969,601              11              347         .063680057
      2           A               13,465,871        1.0133            13,289,126              11              183         .005792660
      3           A               13,536,598        0.8986            15,064,097              13              129         .012024640
      4           A               13,349,764        0.9680            13,791,079              15               74         .009836791
      5           C                2,246,261        0.9498             2,364,983               7              337         .048519448
      6           C                2,676,731        0.9376             2,854,875               7              216         .055564648
      7           C                1,808,925        0.7396             2,445,815               6               82         .083995197
      8           C                2,241,849        0.7885             2,843,182               6               47         .102884127
      9           D3              16,558,670        1.0079            16,428,882              20            2,340         .029093551
     10           F1               2,378,030        0.9621             2,471,708               6               35         .001454493
     11           F1               2,311,347        0.9972             2,317,837               8               16         .001168291
     12           F1               2,440,388        1.0100             2,416,226               5                9         .001469261
     13           F1               2,222,955        0.9692             2,293,598               3                4         .000114024
  RANDOM TOTALS:                  88,688,718                          92,551,009             118            3,819
  CATG J  EXCEPTION VALUES:        8,309,678                           8,828,443
  CATG D1 EXCEPTION VALUES:       13,409,281                          13,477,247
 TOTAL TEST VALUES (4):          110,407,677                         114,856,699
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            5,742,835
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            109,113,864 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             110,407,677 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            120,599,534 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             115,450,599 (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