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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:50                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              073/Falls                                                 VRSN:      W
                                                        073-903/Marlin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               19,366,052        1.0385            18,648,100              15              994         .022913027
      2           A               19,347,090        0.9364            20,661,138              17              504         .055782754
      3           A               19,364,837        1.0571            18,318,832              17              332         .017116251
      4           A               19,345,939        1.0021            19,305,398              15              202         .044653400
      5           D3              22,842,250        0.9249            24,696,994              23            3,113         .051502172
      6           F1               3,996,301        0.9564             4,178,483               9              146         .004362250
      7           F1               3,951,149        0.8152             4,846,846               8               50         .079213176
      8           F1               4,140,069        0.8789             4,710,512               5               18         .007094679
      9           F1               3,744,561        0.8890             4,212,105               3                6         .002828057
     10           L1               3,615,761        1.1431             3,163,119               8              131         .027230243
     11           L1               3,675,673        1.0820             3,397,110               7               26         .086458028
     12           L1               4,338,256        0.9531             4,551,732               6                9         .005526271
  RANDOM TOTALS:                 127,727,938                         130,690,369             133            5,531
  CATG J  EXCEPTION VALUES:       20,743,667                          22,604,842
  CATG D1 EXCEPTION VALUES:       20,185,770                          18,649,344
  CATG L1 EXCEPTION VALUES:        2,277,990                           2,286,896
 TOTAL TEST VALUES (4):          170,935,365                         174,231,451
 MARGIN OF ERROR PERCENT:          5.0000003
 MARGIN OF ERROR VALUE:            8,711,573
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            165,519,878 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             170,935,365 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            182,943,024 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             169,391,541 (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