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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:19:54                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              221/Taylor                                                VRSN:      W
                                                        221-904/Merkel ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               13,814,155        1.0151            13,608,664               7              666         .010295486
      2           A               13,799,648        0.9991            13,812,079              10              367         .004443057
      3           A               13,820,631        0.9465            14,601,829               8              242         .012844027
      4           A               13,726,654        0.9481            14,478,066               9              150         .002517850
      5           D3              32,440,710        0.9895            32,784,952              16            2,611         .006865260
      6           F1               4,977,867        0.9579             5,196,646              10               95         .003510291
      7           F1               5,107,206        1.0310             4,953,643               6               36         .001899847
      8           F1               5,005,939        0.9422             5,313,032               4               10         .008039388
      9           L1               7,120,909        1.0036             7,095,366               6               82         .007997409
     10           L1               6,960,531        1.1966             5,816,924               6               16         .083755616
     11           L1               8,309,854        1.0178             8,164,525               2                4         .000828041
  RANDOM TOTALS:                 125,084,104                         125,825,726              84            4,279
  CATG J  EXCEPTION VALUES:       12,958,668                          13,022,060
  CATG D1 EXCEPTION VALUES:       13,426,969                          13,835,435
  CATG F1 EXCEPTION VALUES:        4,477,347                           4,678,805
  CATG L1 EXCEPTION VALUES:        8,233,335                           8,660,146
 TOTAL TEST VALUES (4):          164,180,423                         166,022,172
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:            8,301,109
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            157,721,063 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             164,180,423 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            174,323,281 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             200,120,756 (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