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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:02:33                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              046/Comal                                                 VRSN:      W
                                                        046-902/Comal ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              986,200,143        0.9712         1,015,444,958              45            8,405         .015911386
      2           A              986,263,989        0.9742         1,012,383,483              39            4,940         .011726145
      3           A              986,433,179        0.9717         1,015,162,271              43            3,629         .012254108
      4           A              985,876,227        0.9399         1,048,916,084              32            2,405         .009981948
      5           C              131,149,015        0.8289           158,220,551              33           10,637         .139386187
      6           C              131,080,325        0.9869           132,820,271              35            3,853         .034027152
      7           C              131,125,928        0.9474           138,406,088              39            2,425         .047375595
      8           C              131,065,577        0.9505           137,891,191              19            1,047         .021057580
      9           D3             280,879,911        0.9789           286,934,223              23            8,393         .008652351
     10           F1             100,190,662        0.7851           127,615,160              13              533         .118517852
     11           F1             100,493,286        0.8290           121,222,299               9              166         .035720365
     12           F1              99,773,294        0.9757           102,258,167               6               72         .018195122
     13           F1              99,747,263        0.8499           117,363,529               5               21         .006080531
  RANDOM TOTALS:               5,150,278,799                       5,414,638,275             341           46,526
  CATG D1 EXCEPTION VALUES:       15,172,784                          14,740,838
 TOTAL TEST VALUES (4):        5,165,451,583                       5,429,379,113
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          271,468,956
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          5,157,910,157 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           5,165,451,583 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          5,700,848,069 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           5,694,147,710 (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