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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:00:24                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              036/Chambers                                              VRSN:      W
                                                        036-903/East Chambers ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               25,412,491        1.0612            23,946,938              20              587         .081572804
      2           A               25,411,160        1.0860            23,398,858              11              309         .028490348
      3           A               25,518,451        0.8329            30,638,073               7              219         .142112471
      4           A               25,236,355        1.1027            22,885,966               7              141         .056369308
      5           D3              28,726,360        0.9480            30,302,068              27            2,096         .125785171
      6           F1               8,201,172        0.9041             9,071,089               9               95         .112255004
      7           F1               8,428,314        0.9803             8,597,688               6               23         .010187738
      8           F1               8,055,819        0.9543             8,441,600               4                7         .017766774
      9           F1               7,426,063        1.0614             6,996,479               2                3         .007318746
     10           G1              71,416,516        1.0200            70,016,192               8               43         .006490076
     11           L1               3,170,081        1.0554             3,003,677               7               83         .006321622
     12           L1               3,123,100        1.0270             3,040,993               5               18         .006419935
     13           L1               3,427,479        1.0762             3,184,797               5               11         .010527859
     14           L1               2,724,856        1.0000             2,724,856               2                4         .000005478
  RANDOM TOTALS:                 246,278,217                         246,249,274             120            3,639
  CATG J  EXCEPTION VALUES:        7,083,794                           7,010,145
  CATG D1 EXCEPTION VALUES:        8,662,180                           7,971,888
 TOTAL TEST VALUES (4):          262,024,191                         261,231,307
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           13,061,565
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            248,169,742 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             262,024,191 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            274,292,872 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             260,788,178 (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