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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:31:07                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              180/Oldham                                                VRSN:      W
                                                        180-902/Vega ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               18,574,534        0.9815            18,924,640              15              401         .007188985
      2           D3               9,493,715        0.9922             9,568,348              28              928         .036154484
      3           F1               4,707,640        0.8480             5,551,462              10              103         .106079955
  RANDOM TOTALS:                  32,775,889                          34,044,450              53            1,432
  CATG J  EXCEPTION VALUES:        1,164,523                           1,095,369
  CATG D1 EXCEPTION VALUES:       17,684,740                          15,409,468
 TOTAL TEST VALUES (4):           51,625,152                          50,549,287
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,527,464
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             48,021,823 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              51,625,152 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             53,076,751 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              65,155,484 (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