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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:13:33                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              184/Parker                                                VRSN:      W
                                                        184-902/Springtown ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               81,456,426        0.9811            83,025,610              20            1,455         .031914254
      2           A               81,435,476        1.0289            79,148,096              22              924         .011200591
      3           A               81,466,801        1.0257            79,425,564              33              683         .014600584
      4           A               81,292,648        1.0026            81,081,835              13              441         .004573972
      5           D3             155,296,220        0.9700           160,099,196              15            4,276         .018875252
  RANDOM TOTALS:                 480,947,571                         482,780,301             103            7,779
  CATG D1 EXCEPTION VALUES:        4,343,370                           3,511,027
 TOTAL TEST VALUES (4):          485,290,941                         486,291,328
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           24,314,566
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            461,976,762 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             485,290,941 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            510,605,894 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             545,847,574 (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