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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:31                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              158/Matagorda                                             VRSN:      W
                                                        158-902/Tidehaven ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               11,823,122        0.9971            11,857,509              10              425         .094113672
      2           A               11,852,765        0.8662            13,683,635              10              231         .030373926
      3           A               11,747,275        0.9829            11,951,648              10              151         .014037754
      4           A               11,799,956        1.0736            10,991,017              10               91         .015689125
      5           D3              22,989,731        0.8881            25,886,422              24            2,911         .159232522
      6           G1              13,056,390        1.0843            12,041,308               7               19         .016481762
      7           G1              15,613,996        1.0860            14,377,529               4                6         .004137607
      8           G1              14,930,520        1.0052            14,853,283               2                3         .000035900
  RANDOM TOTALS:                 113,813,755                         115,642,351              77            3,837
  CATG J  EXCEPTION VALUES:       38,834,767                          38,100,512
  CATG D1 EXCEPTION VALUES:       26,829,166                          27,792,345
  CATG G1 EXCEPTION VALUES:        7,265,730                           7,260,369
 TOTAL TEST VALUES (4):          186,743,418                         188,795,577
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:            9,439,779
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            179,355,798 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             186,743,418 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            198,235,356 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             430,086,482 (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