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DATE: 06/22/2005                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:03:13                                       2004 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              084/Galveston                                             VRSN:      W
                                                        084-911/Friendswood ISD
____________________________________________________________________________________________________________________________________
         (1)           (1)                (1)              (1)                (1)              (2)            (3)
      # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE      SAMPLE SIZE    TOTAL PARCELS
      _________     ________          ___________     _____________       ___________      ___________    _____________

           1           A              352,416,049        0.9599           367,138,295               47            2,672
           2           A              352,502,447        0.9640           365,666,439               46            1,766
           3           A              352,425,732        0.9714           362,801,865               46            1,330
           4           A              352,248,599        0.9587           367,423,176               51              831
           5           F1              22,655,957        0.9469            23,926,452                9              101
           6           F1              23,264,453        0.8640            26,926,450               11               43
           7           F1              24,652,149        0.8593            28,688,641                7               14
  RANDOM TOTALS:                    1,480,165,386                       1,542,571,318              217            6,757
  CATG D1 EXCEPTION VALUES:               225,570                             283,302
  CATG F1 EXCEPTION VALUES:            19,393,320                          19,714,232
 TOTAL TEST VALUES (4):             1,499,784,276                       1,562,568,852
 MARGIN OF ERROR PERCENT:               5.0000000
 MARGIN OF ERROR VALUE:                78,128,443
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:               1,484,440,409 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:                1,499,784,276 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:               1,640,697,295 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):                1,541,202,773 (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