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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:23:46                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              242/Wheeler                                               VRSN:      W
                                                        242-902/Shamrock ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               25,149,030        1.0612            23,698,671              29            1,115         .015145940
      2           D3               9,414,820        0.8091            11,636,164              18            1,459         .058875026
      3           F1              14,926,760        0.9888            15,095,833              11              343         .001412443
      4           G1               9,527,523        1.0648             8,947,711               7              171         .015218558
      5           G1               9,538,679        0.9574             9,963,107               6               74         .020844306
      6           G1              10,026,565        1.0762             9,316,637               6               33         .012595394
      7           L1               8,424,510        1.0558             7,979,267              10              240         .001843957
  RANDOM TOTALS:                  87,007,887                          86,637,390              87            3,435
  CATG J  EXCEPTION VALUES:        6,066,214                           6,137,301
  CATG D1 EXCEPTION VALUES:       11,050,840                          12,633,363
  CATG G1 EXCEPTION VALUES:       19,949,628                          19,577,023
 TOTAL TEST VALUES (4):          124,074,569                         124,985,077
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:            6,249,254
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            118,735,823 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             124,074,569 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            131,234,331 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             128,558,147 (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