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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:39:21                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              227/Travis                                                VRSN:      W
                                                        227-901/Austin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A            5,847,745,419        0.9226         6,338,332,342             101           48,450         .022340214
      2           A            5,847,317,070        0.9096         6,428,448,846              89           32,595         .028810651
      3           A            5,847,294,450        0.8765         6,671,185,910              97           22,008         .024314354
      4           A            5,847,433,555        0.8318         7,029,855,200              63           10,879         .084024569
      5           B            1,255,052,811        0.9310         1,348,069,614              50            7,806         .036508956
      6           B            1,257,697,122        0.8975         1,401,333,841              22            1,718         .059009722
      7           B            1,258,141,510        0.8690         1,447,803,809              10              164         .054118060
      8           B            1,248,522,645        0.9253         1,349,316,595              12               64         .029618961
      9           C              151,953,309        0.6762           224,716,517              13            4,876         .096578511
     10           C              152,010,886        0.7445           204,178,490              30            1,403         .095497017
     11           C              152,280,281        0.6625           229,857,028              18              466         .440388424
     12           C              151,497,050        0.9138           165,787,973               7              123         .010302987
     13           D3             212,913,356        0.8085           263,343,669              12            2,012         .124962709
     14           F1           2,230,379,118        0.7856         2,839,077,289              24            3,787         .120041011
     15           F1           2,242,199,903        0.8773         2,555,796,082              34              921         .045661940
     16           F1           2,218,087,531        0.9895         2,241,624,589              14              310         .010471435
     17           F1           2,229,197,344        0.9356         2,382,639,316              15               94         .038600076
     18           L1             649,430,737        1.0344           627,833,272               7            6,077         .054020692
     19           L1             649,477,629        0.9835           660,373,797               7            1,151         .009971947
     20           L1             650,834,858        1.0016           649,795,186               7              349         .003166384
     21           L1             646,867,077        0.9821           658,657,038               9               98         .012617596
  RANDOM TOTALS:              40,746,333,661                      45,718,026,403             641          145,351
  CATG D1 EXCEPTION VALUES:        1,854,387                           2,179,455
 TOTAL TEST VALUES (4):       40,748,188,048                      45,720,205,858
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:        2,286,010,293
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:          40,748,188,048 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:         43,434,195,565 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:         48,006,216,151 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):          40,673,736,142 (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