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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:28:36                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              174/Nacogdoches                                           VRSN:      W
                                                        174-904/Nacogdoches ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              191,836,284        0.9581           200,225,743              48            3,742         .023534563
      2           A              191,718,670        0.9661           198,445,989              67            1,974         .017280946
      3           A              191,877,720        1.0021           191,475,621              47            1,271         .008983138
      4           A              191,579,644        0.9978           192,002,049              21              723         .004811008
      5           B               20,600,119        0.9545            21,582,105               6              111         .002209082
      6           B               21,389,310        0.9037            23,668,596               7               18         .018820975
      7           B               21,319,282        0.9567            22,284,187               3                8         .001492031
      8           D3             120,629,270        0.8705           138,574,693              20            4,407         .125786666
      9           F1              59,524,662        0.8070            73,760,424              10              439         .267395586
     10           F1              59,770,104        0.8968            66,648,198               9              155         .021148725
     11           F1              59,735,458        0.9776            61,104,192               6               62         .002582801
     12           F1              58,787,294        0.9457            62,162,730               6               17         .001685533
     13           L1              33,701,976        0.9448            35,671,016               7              515         .028795131
     14           L1              34,049,023        0.9622            35,386,638               7              117         .014139311
     15           L1              33,258,749        0.9146            36,364,257               6               37         .040177809
     16           L1              33,445,462        1.0111            33,078,293               3                7         .004146419
  RANDOM TOTALS:               1,323,223,027                       1,392,434,731             273           13,603
  CATG D1 EXCEPTION VALUES:       20,153,110                          17,088,342
  CATG B  EXCEPTION VALUES:       19,627,200                          19,982,091
 TOTAL TEST VALUES (4):        1,363,003,337                       1,429,505,164
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           71,475,258
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,358,029,906 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,363,003,337 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,500,980,422 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,479,424,391 (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