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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:44                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              161/McLennan                                              VRSN:      W
                                                        161-922/Robinson ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               61,543,541        0.9819            62,678,013              16              904         .008941573
      2           A               61,539,955        0.9595            64,137,525              18              650         .012339407
      3           A               61,610,060        0.9863            62,465,842              17              501         .004441274
      4           A               61,402,178        0.9889            62,091,392              37              339         .003799443
      5           D3              55,191,269        0.9989            55,252,046              22            1,788         .017235442
      6           F1               4,512,754        0.9481             4,759,787               6               50         .003309317
      7           F1               4,406,521        0.8959             4,918,541               5               16         .019723728
      8           F1               5,602,861        0.9979             5,614,652               3                4         .000156501
  RANDOM TOTALS:                 315,809,139                         321,917,798             124            4,252
  CATG D1 EXCEPTION VALUES:        5,782,361                           6,260,104
  CATG F1 EXCEPTION VALUES:        6,436,129                           7,168,529
 TOTAL TEST VALUES (4):          328,027,629                         335,346,431
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           16,767,322
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            318,579,109 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             328,027,629 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            352,113,753 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             316,763,359 (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