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DATE: 01/30/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 08:10:06                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              093/Grimes                                                VRSN:      W
                                                        093-905/Richards ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,316,447        0.9907             1,328,805               6               62         .018806642
      2           A                1,296,286        0.8497             1,525,581               7               27         .015413679
      3           A                1,286,261        0.8532             1,507,573               5               17         .014428068
      4           A                1,227,015        0.8961             1,369,284               4               10         .004200715
      5           D3              12,500,050        0.9447            13,231,767              14              731         .011775935
  RANDOM TOTALS:                  17,626,059                          18,963,010              36              847
  CATG J  EXCEPTION VALUES:        5,230,600                           5,267,487
  CATG D1 EXCEPTION VALUES:        2,712,790                           2,752,925
  CATG G1 EXCEPTION VALUES:       20,676,448                          20,168,062
 TOTAL TEST VALUES (4):           46,245,897                          47,151,484
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,357,574
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             44,793,910 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              46,245,897 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             49,509,058 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              46,682,954 (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