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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:12:17                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              098/Hansford                                              VRSN:      W
                                                        098-901/Gruver ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                5,846,894        0.9670             6,046,426               8              193         .070365508
      2           A                5,834,174        0.9548             6,110,362               7              100         .002498289
      3           A                5,749,771        0.9689             5,934,329               6               70         .017298517
      4           A                5,798,961        0.8467             6,848,897               6               46         .016123125
      5           D3              11,447,236        0.6781            16,881,339              10            1,681         .209706636
      6           G1              27,180,921        1.0540            25,788,350              11              182         .018854679
      7           G1              27,042,143        1.0452            25,872,697              11               89         .017262606
      8           G1              27,284,977        0.9585            28,466,330              10               49         .004336221
      9           G1              26,575,956        0.9985            26,615,880               8               20         .007018039
  RANDOM TOTALS:                 142,761,033                         148,564,610              77            2,430
  CATG J  EXCEPTION VALUES:        7,789,225                           7,975,065
  CATG D1 EXCEPTION VALUES:       29,412,855                          24,444,726
 TOTAL TEST VALUES (4):          179,963,113                         180,984,401
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            9,049,220
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            171,935,181 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             179,963,113 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            190,033,621 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             247,452,806 (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