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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:10:37                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              091/Grayson                                               VRSN:      W
                                                        091-906/Sherman ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              198,700,512        1.0069           197,338,874              56            4,154         .019248997
      2           A              198,713,301        0.9898           200,761,064              56            2,157         .004663612
      3           A              198,733,299        0.9984           199,051,782              58            1,508         .002263957
      4           A              198,604,831        0.9947           199,663,045              67              856         .004248315
      5           B               24,768,028        0.9938            24,922,548              12              227         .007698488
      6           B               29,640,228        1.0078            29,410,824              15               62         .008300792
      7           B               24,555,348        0.8852            27,739,887               3                6         .017795299
      8           F1              71,942,123        1.0237            70,276,568              17              425         .004720481
      9           F1              72,372,157        0.8968            80,700,443               9              116         .044999872
     10           F1              72,680,209        1.0252            70,893,688               9               37         .006329472
     11           F1              69,904,000        0.8513            82,114,413               6               11         .043794492
     12           L1              62,523,102        0.9318            67,099,272               7              603         .026530934
     13           L1              62,399,022        1.0957            56,949,002               7               90         .061158561
     14           L1              63,347,015        0.8462            74,860,571               6               23         .091804858
     15           L1              60,687,204        0.9952            60,979,908               4                7         .000212949
  RANDOM TOTALS:               1,409,570,379                       1,442,761,889             332           10,282
  CATG D1 EXCEPTION VALUES:        3,907,655                           2,677,186
  CATG B  EXCEPTION VALUES:       15,318,855                          15,608,000
 TOTAL TEST VALUES (4):        1,428,796,889                       1,461,047,075
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           73,052,354
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,387,994,721 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,428,796,889 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,534,099,429 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,727,114,823 (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