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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:36:21                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              019/Bowie                                                 VRSN:      W
                                                        019-913/Hubbard ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                  806,360        0.8232               979,543               6               25         .035158360
      2           A                  806,648        1.0245               787,358               6               14         .020413501
      3           A                  836,619        0.9105               918,857               6               11         .016741932
      4           A                  750,817        0.8836               849,725               4                6         .009356637
      5           D3              11,632,438        1.0501            11,077,457              21              384         .123026767
  RANDOM TOTALS:                  14,832,882                          14,612,940              43              440
  CATG D1 EXCEPTION VALUES:        1,059,154                             924,879
 TOTAL TEST VALUES (4):           15,892,036                          15,537,819
 MARGIN OF ERROR PERCENT:         10.7728890
 MARGIN OF ERROR VALUE:            1,673,872
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             13,863,947 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              15,892,036 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             17,211,691 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              13,147,835 (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