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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:09:48                                       2005 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   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A              376,757,500        0.9545           394,717,129              57            2,769         .010816574
      2           A              376,829,718        0.9693           388,764,797              57            1,822         .005099251
      3           A              376,591,948        0.9582           393,020,192              57            1,375         .002597680
      4           A              376,525,507        0.9609           391,846,713              56              844         .006311112
      5           F1              23,405,198        0.8423            27,787,247               7              102         .010232355
      6           F1              23,421,220        0.8287            28,262,604               6               44         .021698323
      7           F1              24,362,152        0.8230            29,601,643               5               16         .044968233
  RANDOM TOTALS:               1,577,893,243                       1,654,000,325             245            6,972
  CATG D1 EXCEPTION VALUES:          223,050                             293,376
  CATG F1 EXCEPTION VALUES:       22,621,010                          24,314,801
 TOTAL TEST VALUES (4):        1,600,737,303                       1,678,608,502
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           83,930,425
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:          1,594,678,077 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:           1,600,737,303 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:          1,762,538,927 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):           1,624,439,060 (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