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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:41:08                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              237/Waller                                                VRSN:      W
                                                        237-904/Waller ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              131,397,875        0.9648           136,191,827              33            2,268         .025322493
      2           A              131,317,908        0.9571           137,203,958              36            1,417         .030310878
      3           A              131,363,364        0.9788           134,208,586              38              967         .019131444
      4           A              131,259,787        0.9967           131,694,378              31              590         .039711473
      5           D3             370,343,240        0.9215           401,891,742              40           10,815         .129109803
      6           F1              15,996,866        1.1323            14,127,763               8              222         .060379730
      7           F1              16,398,854        0.8765            18,709,474               6               59         .085042995
      8           F1              31,544,862        1.1091            28,441,856               8               25         .171098975
  RANDOM TOTALS:                 959,622,756                       1,002,469,584             200           16,363
  CATG D1 EXCEPTION VALUES:       24,320,722                          21,554,542
 TOTAL TEST VALUES (4):          983,943,478                       1,024,024,126
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           51,201,206
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            972,822,920 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             983,943,478 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,075,225,332 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,093,308,344 (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