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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:43:28                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              057/Dallas                                                VRSN:      W
                                                        057-905/Dallas ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A            7,890,573,257        0.9994         7,895,310,443              84           91,421         .004731869
      2           A            7,890,362,874        1.0104         7,809,147,738              93           42,710         .001884571
      3           A            7,891,297,615        0.9946         7,934,141,982              99           21,297         .003377588
      4           A            7,889,616,260        0.9925         7,949,235,526              96            7,362         .004718657
      5           B            1,398,963,754        0.9971         1,403,032,548              88            5,486         .010601838
      6           B            1,411,543,619        1.0000         1,411,543,619              10              330
      7           B            1,377,942,903        0.9559         1,441,513,655               8              126         .007353288
      8           B            1,391,459,792        0.9785         1,422,033,513               6               48         .009890364
      9           C              373,508,737        0.7737           482,756,543              17            8,893         .108759552
     10           C              377,184,146        0.9054           416,593,932               8            1,277         .009354306
     11           C              370,389,726        0.7891           469,382,494               8              394         .032551883
     12           C              372,718,143        1.0193           365,660,888               7              114         .006530422
     13           F1           4,322,158,347        0.9898         4,366,698,673              91            6,047         .022699804
     14           F1           4,321,460,182        0.9985         4,327,952,110              42            1,047         .051771096
     15           F1           4,344,122,064        0.9546         4,550,724,978              19              261         .019666739
     16           F1           4,297,799,180        0.9217         4,662,904,611              15               51         .008527640
     17           L1           2,099,686,358        1.1839         1,773,533,540               7            9,245         .062520691
     18           L1           2,099,651,637        0.9697         2,165,258,984               7            1,312         .046529352
     19           L1           2,106,916,339        1.0140         2,077,826,764               7              337         .003001864
     20           L1           2,090,637,568        0.9977         2,095,457,119               7               72         .000751375
  RANDOM TOTALS:              64,317,992,501                      65,020,709,660             719          197,830
  CATG D1 EXCEPTION VALUES:        1,299,685                           1,334,285
 TOTAL TEST VALUES (4):       64,319,292,186                      65,022,043,945
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:        3,251,102,197
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:         61,770,941,748 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:          64,319,292,186 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:         68,273,146,142 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):          62,477,317,857 (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