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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:53                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              246/Williamson                                            VRSN:      W
                                                        246-907/Jarrell ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               78,047,768        0.9890            78,915,842              40              558         .002064655
      2           A               77,994,607        0.9710            80,324,003              39              366         .003367661
      3           A               78,197,078        0.9586            81,574,252              40              294         .002704302
      4           A               77,775,550        0.9697            80,205,785              40              204         .003703839
      5           C                6,752,383        0.9031             7,476,894              11              287         .031980883
      6           C                4,679,960        1.0236             4,572,059               9              108         .001835223
      7           C                1,516,998        1.0015             1,514,726               9               20         .000875641
      8           D3              52,351,696        0.9930            52,720,741              21            1,566         .003078733
  RANDOM TOTALS:                 377,316,040                         387,304,302             209            3,403
  CATG D1 EXCEPTION VALUES:        4,411,594                           4,543,343
 TOTAL TEST VALUES (4):          381,727,634                         391,847,645
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           19,592,382
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            372,255,263 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             381,727,634 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            411,440,027 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             363,838,243 (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