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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:41:25                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-914/Wylie ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              388,990,944        1.0103           385,025,185              78            2,799         .001465680
      2           A              388,871,920        0.9988           389,339,127              83            2,312         .000662983
      3           A              388,836,830        0.9985           389,420,961              83            1,991         .000666062
      4           A              388,731,642        1.0059           386,451,578              80            1,499         .000608598
      5           F1              44,837,367        0.8683            51,638,105               7              153         .049747153
      6           F1              45,335,470        0.9539            47,526,439               6               55         .022285580
      7           F1              48,296,821        0.7896            61,166,187               5               21         .157021285
      8           F1              40,344,110        0.9877            40,846,522               3                4         .000089266
      9           L1              22,681,542        0.9547            23,757,769               9              185         .007542268
     10           L1              25,161,819        0.9367            26,862,196               5               25         .008247674
     11           L1              23,727,460        0.9454            25,097,800               4                5         .000236466
  RANDOM TOTALS:               1,805,815,925                       1,827,131,869             363            9,049
  CATG D1 EXCEPTION VALUES:          872,801                             776,717
  CATG L1 EXCEPTION VALUES:       19,470,648                          19,174,693
 TOTAL TEST VALUES (4):        1,826,159,374                       1,847,083,279
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           92,354,164
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,754,729,115 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,826,159,374 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,939,437,443 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           2,105,076,162 (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