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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:07:28                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              161/McLennan                                              VRSN:      W
                                                        161-916/West ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               33,890,827        0.9117            37,173,223              12              725         .062299185
      2           A               33,875,856        0.9882            34,280,364              15              443         .014548069
      3           A               33,887,627        0.9529            35,562,627              13              330         .015420661
      4           A               33,818,307        1.0446            32,374,408              11              213         .036947078
      5           D3              73,367,764        0.9347            78,493,382              21            3,091         .051411798
      6           F1               4,934,610        0.9581             5,150,412               7              100         .003670785
      7           F1               5,020,329        0.9620             5,218,637               6               39         .001556412
      8           F1               5,203,399        0.9802             5,308,507               5               17         .001305595
      9           F1               4,532,184        0.9950             4,554,959               3                5         .000648596
     10           L1               3,776,881        0.8539             4,423,095               8              141         .143307465
     11           L1               3,833,955        1.1130             3,444,704               6               44         .021369940
     12           L1               3,913,399        1.2267             3,190,184               5               19         .014406253
     13           L1               3,523,086        1.0685             3,297,226               3                6         .014585658
  RANDOM TOTALS:                 243,578,224                         252,471,728             115            5,173
  CATG J  EXCEPTION VALUES:       13,564,742                          13,357,877
  CATG D1 EXCEPTION VALUES:       10,219,274                          10,873,265
 TOTAL TEST VALUES (4):          267,362,240                         276,702,870
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:           13,835,144
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            262,867,726 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             267,362,240 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            290,538,014 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             230,456,841 (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