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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:10:34                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              091/Grayson                                               VRSN:      W
                                                        091-905/Howe ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               25,358,259        1.0312            24,591,019              14              456         .018493967
      2           A               25,259,924        1.0483            24,096,083              17              286         .009805783
      3           A               25,384,079        1.0394            24,421,858              30              205         .012529886
      4           A               25,207,444        1.0275            24,532,792              16              132         .004082361
      5           D3              33,874,188        1.0788            31,399,878              21            1,350         .025989699
  RANDOM TOTALS:                 135,083,894                         129,041,630              98            2,429
  CATG J  EXCEPTION VALUES:        6,299,388                           6,617,748
  CATG D1 EXCEPTION VALUES:        6,582,475                           4,688,515
 TOTAL TEST VALUES (4):          147,965,757                         140,347,893
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:            7,017,395
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            133,330,498 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:            147,365,288 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             147,965,757 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):             149,761,596 (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