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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:46                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              246/Williamson                                            VRSN:      W
                                                        246-905/Granger ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                9,490,992        0.9708             9,776,465               9              561         .003867855
      2           A                9,445,484        0.8579            11,010,006               7              215         .089722416
      3           A                9,493,683        0.9622             9,866,642               9              140         .013793425
      4           A                9,433,839        0.9599             9,827,939               7               79         .011597122
      5           D3              28,096,485        0.9992            28,118,980              37            1,530         .089678669
      6           F1               1,123,009        0.9613             1,168,219               7               55         .012649148
      7           F1               1,072,421        0.9836             1,090,302               6               18         .021030641
      8           F1               1,086,959        0.9016             1,205,589               6                9         .015166898
  RANDOM TOTALS:                  69,242,872                          72,064,142              88            2,607
  CATG J  EXCEPTION VALUES:        5,458,999                           5,434,478
  CATG D1 EXCEPTION VALUES:       10,143,518                          11,351,556
  CATG F1 EXCEPTION VALUES:          931,643                             998,552
 TOTAL TEST VALUES (4):           85,777,032                          89,848,728
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            4,492,436
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             85,356,292 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              85,777,032 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             94,341,164 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              79,333,899 (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