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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:11:07                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              175/Navarro                                               VRSN:      W
                                                        175-903/Corsicana ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               96,383,205        1.0577            91,125,277              23            3,042         .040946612
      2           A               96,259,239        0.9995            96,307,393              44            1,548         .030590147
      3           A               96,285,269        0.9382           102,627,658              59            1,064         .028772332
      4           A               96,246,926        0.9524           101,057,251              50              546         .008798281
      5           D3              84,525,355        0.9837            85,925,948              20            4,032         .049276123
      6           F1              38,189,472        0.9028            42,301,143               7              431         .021242913
      7           F1              38,152,674        0.9877            38,627,796               6              121         .029971382
      8           F1              40,482,024        0.9365            43,226,934               8               32         .029173346
      9           F1              35,745,223        0.9539            37,472,715               4                5         .001984778
     10           L1              22,278,164        1.0349            21,526,876               7              318         .000806032
     11           L1              22,653,017        0.8866            25,550,436               7               60         .019476280
     12           L1              43,510,979        1.0159            42,829,982               9               13         .024819617
  RANDOM TOTALS:                 710,711,547                         728,579,409             244           11,212
  CATG J  EXCEPTION VALUES:       47,839,774                          50,437,765
  CATG D1 EXCEPTION VALUES:        9,826,040                           8,392,227
 TOTAL TEST VALUES (4):          768,377,361                         787,409,401
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           39,370,470
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            748,038,931 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             768,377,361 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            826,779,871 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             985,534,150 (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