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DATE: 02/10/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 12:03:16                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              090/Gray                                                  VRSN:      P
                                                        090-904/Pampa ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              271,764,770        0.9520           285,467,195               59            8,347
           2           D3              36,291,123        0.8978            40,422,280               16            2,113
           3           F1              85,171,390        0.8181           104,108,776               20            1,143
           4           G1              66,427,920        1.0521            63,138,409               21              378
           5           L1             104,097,248        1.0716            97,141,889               10            1,201
  RANDOM TOTALS:                      563,752,451                         590,278,549              126           13,182
  CATG J  EXCEPTION VALUES:            43,281,934                          42,745,457
  CATG D1 EXCEPTION VALUES:            15,502,140                          17,083,572
 TOTAL TEST VALUES (4):               622,536,525                         650,107,578
 MARGIN OF ERROR PERCENT:               5.8753928
 MARGIN OF ERROR VALUE:                38,196,374
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:                 611,911,204 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                  622,536,525 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:                 688,303,952 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                  775,260,013 (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