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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:10:23                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              090/Gray                                                  VRSN:      W
                                                        090-904/Pampa ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              278,646,640        0.9593           290,468,717              70            8,332         .040460099
      2           D3              38,556,363        0.8954            43,060,490              21            2,115         .059913472
      3           F1              90,589,850        1.0272            88,191,053              32            1,164         .164867192
      4           G1              17,062,522        0.7271            23,466,541               7              110         .145357947
      5           G1              17,247,370        1.0094            17,086,755               6               37         .011412060
      6           G1              20,737,937        1.1029            18,803,098               4               11         .012901237
      7           L1             120,087,114        1.0173           118,044,937              20            1,184         .006627279
  RANDOM TOTALS:                 582,927,796                         599,121,591             160           12,953
  CATG J  EXCEPTION VALUES:       52,045,360                          44,659,741
  CATG D1 EXCEPTION VALUES:       15,606,770                          18,102,162
  CATG G1 EXCEPTION VALUES:       12,972,945                          12,647,570
 TOTAL TEST VALUES (4):          663,552,871                         674,531,064
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           33,726,553
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            640,804,511 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             663,552,871 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            708,257,617 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             822,424,635 (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