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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:22:26                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              227/Travis                                                VRSN:      P
                                                        227-901/Austin ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A            5,580,402,339        0.9934         5,617,477,692              114           47,718
           2           A            5,580,372,544        0.9922         5,624,241,629              115           32,162
           3           A            5,580,374,011        0.9879         5,648,723,566              115           21,733
           4           A            5,580,302,264        0.9722         5,739,870,669              114           10,648
           5           B            1,206,053,996        0.9897         1,218,605,634               59            7,762
           6           B            1,206,576,106        0.9668         1,248,010,039               52            1,608
           7           B            1,208,997,152        0.9705         1,245,746,679                7              155
           8           B            1,202,132,903        0.8681         1,384,786,203                9               63
           9           C              154,623,641        0.8830           175,111,711               21            4,638
          10           C              155,058,538        0.7544           205,538,889               10            1,038
          11           C              154,037,482        0.7726           199,375,462                7              374
          12           C              154,466,441        1.0117           152,680,084                7              108
          13           D3             224,354,676        0.9827           228,304,341               11            2,158
          14           F1           2,028,060,554        0.8998         2,253,901,483               60            3,640
          15           F1           2,029,225,818        0.9061         2,239,516,409               15              813
          16           F1           2,031,249,493        0.9545         2,128,076,996               11              280
          17           F1           2,019,741,469        0.8983         2,248,404,173                7               88
          18           L1             639,803,340        0.9830           650,868,098                7            5,824
          19           L1             640,059,426        0.9911           645,807,109                7            1,034
          20           L1             642,295,914        1.0745           597,762,600                7              295
          21           L1             636,377,806        0.9608           662,341,597                7               74
  RANDOM TOTALS:                   38,654,565,913                      40,115,151,063              762          142,213
  CATG D1 EXCEPTION VALUES:             2,145,884                           2,392,476
 TOTAL TEST VALUES (4):            38,656,711,797                      40,117,543,539
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:             2,005,877,177
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:              38,111,666,362 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:               38,656,711,797 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:              42,123,420,716 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):               38,621,249,284 (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