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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:11:17                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              175/Navarro                                               VRSN:      W
                                                        175-905/Frost ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                2,865,544        0.7770             3,687,959               7              181         .101072650
      2           A                2,812,625        0.8714             3,227,708               9               92         .045667929
      3           A                2,829,300        0.7317             3,866,749               7               54         .017176553
      4           A                2,791,489        0.9414             2,965,253               7               32         .062266826
      5           D3              17,409,717        1.0074            17,281,831              20            1,502         .042400311
  RANDOM TOTALS:                  28,708,675                          31,029,500              50            1,861
  CATG J  EXCEPTION VALUES:        3,415,750                           3,401,059
  CATG D1 EXCEPTION VALUES:        5,453,660                           6,098,922
 TOTAL TEST VALUES (4):           37,578,085                          40,529,481
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            2,026,474
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:              37,578,085 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:             38,503,007 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             42,555,955 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              42,872,843 (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