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DATE: 01/27/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:02:44                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              229/Tyler                                                 VRSN:      W
                                                        229-905/Spurger ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                4,492,761        0.9375             4,792,278               6              230         .007569902
      2           A                4,472,382        0.9369             4,773,596               7              129         .004576906
      3           A                4,521,592        0.9568             4,725,744               6               82         .000769203
      4           A                4,420,481        0.9834             4,495,100               6               52         .001053975
      5           D3              12,450,165        0.9653            12,897,716              10            1,689         .001806000
  RANDOM TOTALS:                  30,357,381                          31,684,434              35            2,182
  CATG J  EXCEPTION VALUES:        2,457,382                           2,839,432
  CATG D1 EXCEPTION VALUES:       13,543,790                          14,169,929
 TOTAL TEST VALUES (4):           46,358,553                          48,693,795
 MARGIN OF ERROR PERCENT:          5.0000005
 MARGIN OF ERROR VALUE:            2,434,690
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             46,259,105 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              46,358,553 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             51,128,485 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              42,172,966 (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