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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:57:17                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-902/Anna ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A               35,617,109        0.8807            40,441,818                7              439
           2           A               35,934,915        0.9918            36,232,018               47              268
           3           A               35,192,644        1.0014            35,143,443               54              208
           4           A               35,509,944        0.9947            35,699,149               28              131
           5           C                7,019,548        0.9266             7,575,597               13              372
           6           C                7,026,438        1.0093             6,961,694               14              240
           7           D3              61,193,237        0.9811            62,372,069               18           34,422
           8           F1               3,381,689        0.8704             3,885,213                7               21
           9           F1               3,551,685        0.9588             3,704,302                4                5
  RANDOM TOTALS:                      224,427,209                         232,015,303              192           36,106
  CATG D1 EXCEPTION VALUES:             3,853,845                           3,380,313
  CATG F1 EXCEPTION VALUES:             8,445,018                           8,727,632
 TOTAL TEST VALUES (4):               236,726,072                         244,123,248
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                12,206,162
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 231,917,086 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  236,726,072 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 256,329,410 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  248,970,114 (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