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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:26:15                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              252/Young                                                 VRSN:      W
                                                        252-903/Olney ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                9,955,102        1.0639             9,357,178              14              559         .064887815
      2           A                9,947,274        1.0203             9,749,362              10              257         .056314358
      3           A                9,950,190        1.0355             9,609,068              10              174         .023593719
      4           A                9,944,786        0.9324            10,665,794              11              112         .011639484
      5           D3              10,170,950        0.9333            10,897,836              20            1,386         .039411022
      6           F1               1,531,919        0.9807             1,562,067               7               79         .021656453
      7           F1               1,510,756        0.9446             1,599,361               8               34         .007634500
      8           F1               1,565,818        0.9843             1,590,793               6               12         .001055412
      9           G1               3,686,250        1.0337             3,566,073               9               66         .062536980
     10           G1               3,666,470        0.9631             3,806,946               7               19         .024227544
     11           G1               3,755,380        0.9826             3,821,881               5               10         .018762511
     12           G1               3,440,220        1.1271             3,052,276               3                4         .011029149
  RANDOM TOTALS:                  69,125,115                          69,278,635             110            2,712
  CATG J  EXCEPTION VALUES:        7,971,170                           7,192,515
  CATG D1 EXCEPTION VALUES:       11,058,270                           9,972,033
  CATG F1 EXCEPTION VALUES:        1,214,270                           1,460,106
 TOTAL TEST VALUES (4):           89,368,825                          87,903,289
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            4,395,164
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             83,508,125 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              89,368,825 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             92,298,453 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             110,648,802 (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