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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:39:32                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              227/Travis                                                VRSN:      W
                                                        227-912/Lago Vista ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              150,617,226        0.9205           163,625,449              24            1,239         .034758125
      2           A              150,574,066        0.9249           162,800,374              45              839         .024253568
      3           A              150,744,259        0.8559           176,123,682              18              574         .052586968
      4           A              150,173,190        0.9638           155,813,644              16              231         .021931436
      5           C               38,783,438        1.0899            35,584,400              14            5,178        1.296049785
      6           C               28,364,894        0.6535            43,404,581              16            1,375         .073925649
      7           C               33,669,549        0.8345            40,346,973              27              362         .041692981
      8           C               33,435,184        0.9440            35,418,627              12              105         .026731181
      9           D3              46,562,490        0.7450            62,499,987              17              583         .337237618
  RANDOM TOTALS:                 782,924,296                         875,617,717             189           10,486
  CATG D1 EXCEPTION VALUES:          232,690                             296,041
 TOTAL TEST VALUES (4):          783,156,986                         875,913,758
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           43,795,688
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:             783,156,986 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:            832,118,070 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            919,709,446 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             866,202,032 (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