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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:33:17                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              007/Atascosa                                              VRSN:      W
                                                        007-901/Charlotte ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,329,500        0.9212             4,699,848               9              185         .018698160
      2           A                4,347,525        0.9319             4,665,227               7              103         .002376100
      3           A                4,305,053        0.9780             4,401,895               6               74         .012580419
      4           A                4,275,803        0.9576             4,465,124               6               47         .005567084
      5           D3              13,995,150        1.0667            13,120,043              33            1,686         .060008688
      6           G1               1,767,218        0.8438             2,094,356               5               22         .434976450
      7           G1               1,828,243        1.0539             1,734,740               3                6         .007838283
      8           G1               2,134,728        1.0167             2,099,664               2                3         .000634384
  RANDOM TOTALS:                  36,983,220                          37,280,897              71            2,126
  CATG J  EXCEPTION VALUES:        7,502,649                           6,911,376
  CATG D1 EXCEPTION VALUES:       13,409,550                          15,429,218
  CATG G1 EXCEPTION VALUES:        3,583,663                           3,577,437
 TOTAL TEST VALUES (4):           61,479,082                          63,198,928
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            3,159,946
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             60,038,982 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              61,479,082 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             66,358,874 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              63,756,529 (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