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DATE: 01/30/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 08:11:19                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              229/Tyler                                                 VRSN:      W
                                                        229-906/Chester ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                3,564,779        0.9291             3,836,809              15              161         .006548068
      2           A                3,527,806        1.0068             3,503,979              15               93         .001191325
      3           A                3,542,845        0.9961             3,556,716              15               61         .001360125
      4           A                3,524,141        0.9701             3,632,761              16               36         .000827548
      5           D3              12,262,110        0.9723            12,611,447              28            2,452         .001434628
  RANDOM TOTALS:                  26,421,681                          27,141,712              89            2,803
  CATG J  EXCEPTION VALUES:        3,566,479                           3,923,663
  CATG D1 EXCEPTION VALUES:       22,926,952                          18,461,316
 TOTAL TEST VALUES (4):           52,915,112                          49,526,691
 MARGIN OF ERROR PERCENT:          5.0000009
 MARGIN OF ERROR VALUE:            2,476,335
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             47,050,356 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:             52,003,026 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              52,915,112 (OUTSIDE CONFIDENCE INTERVAL)
 VALUE ASSIGNED (6):              50,501,698 (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