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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:20:19                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              224/Throckmorton                                          VRSN:      W
                                                        224-902/Woodson ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                  607,396        0.9599               632,770               8               53         .043541499
      2           A                  598,221        0.9840               607,948               8               30         .011310921
      3           A                  612,825        0.9710               631,128               5               20         .000881572
      4           A                  577,447        0.9413               613,457               8               12         .002243765
      5           D3               4,139,220        0.9207             4,495,732              27              925         .071741884
      6           G1               2,296,880        0.7075             3,246,473              13               35         .219735650
      7           G1               2,326,240        0.8623             2,697,715               8               14         .090859676
      8           G1               2,124,500        1.2623             1,683,039               5                7         .078954629
      9           G1               2,097,980        1.0763             1,949,252               3                4         .000451263
  RANDOM TOTALS:                  15,380,709                          16,557,514              85            1,100
  CATG J  EXCEPTION VALUES:          927,231                             895,255
  CATG D1 EXCEPTION VALUES:        3,983,710                           3,594,595
  CATG G1 EXCEPTION VALUES:        6,488,330                           6,547,713
 TOTAL TEST VALUES (4):           26,779,980                          27,595,077
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            1,379,754
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             26,215,323 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              26,779,980 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             28,974,831 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              27,073,865 (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