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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:41:10                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              237/Waller                                                VRSN:      W
                                                        237-905/Royal ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               29,284,743        1.0102            28,989,055              12              609         .055116758
      2           A               29,247,912        0.9246            31,633,043              15              339         .037205476
      3           A               29,383,224        1.0552            27,846,118              23              230         .006065333
      4           A               28,953,229        1.0833            26,726,880              13              134         .019595436
      5           D3              95,336,085        1.0330            92,290,499              28            4,528         .008827393
      6           F1               7,086,822        0.9819             7,217,458               7              114         .231387411
      7           F1               7,141,771        1.0953             6,520,379               6               43         .012712530
      8           F1              14,101,641        0.8853            15,928,658               9               26         .015985690
      9           G1              12,467,930        0.8710            14,314,501               5               19         .040760619
     10           G1              12,556,306        1.2670             9,910,265               3                6         .124800217
     11           G1              10,578,712        1.0282            10,288,574               2                3         .017498258
  RANDOM TOTALS:                 276,138,375                         271,665,430             123            6,051
  CATG J  EXCEPTION VALUES:       11,471,444                          13,092,752
  CATG D1 EXCEPTION VALUES:       12,686,160                          12,652,280
  CATG G1 EXCEPTION VALUES:       11,104,543                          11,683,165
 TOTAL TEST VALUES (4):          311,400,522                         309,093,627
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           15,454,681
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            293,638,946 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             311,400,522 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            324,548,308 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             485,934,973 (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