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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:35:01                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              015/Bexar                                                 VRSN:      W
                                                        015-909/Somerset ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               39,063,444        0.9944            39,283,431              14            1,020         .044910079
      2           A               38,841,653        1.0076            38,548,683              10              597         .005498675
      3           A               39,128,923        1.0363            37,758,297              14              435         .067454383
      4           A               38,650,496        0.9434            40,969,362              14              272         .013128653
      5           C                5,426,658        0.8931             6,076,204               7              620         .070462461
      6           C                5,406,234        1.0200             5,300,229               7              278         .032257180
      7           C                5,405,764        1.0812             4,999,782               7              195         .090139553
      8           C                5,381,074        0.9665             5,567,588               9              131         .037368973
      9           D3              38,991,822        0.9424            41,375,023              20            1,981         .018458294
  RANDOM TOTALS:                 216,296,068                         219,878,599             102            5,529
  CATG D1 EXCEPTION VALUES:        2,372,501                           4,915,834
 TOTAL TEST VALUES (4):          218,668,569                         224,794,433
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:           11,239,722
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            213,554,711 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             218,668,569 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            236,034,155 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             233,040,910 (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