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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:24:30                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              245/Willacy                                               VRSN:      W
                                                        245-902/Lyford CISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               10,337,273        0.9658            10,703,327              15              588         .006651934
      2           A               10,334,050        0.9985            10,349,574              15              343         .004798389
      3           A               10,358,776        0.9602            10,788,144              15              240         .006685058
      4           A               10,291,260        0.9214            11,169,156              16              130         .003881702
      5           D3              17,176,571        0.9093            18,889,883              20          179,033         .030619516
      6           G1              21,472,167        0.9470            22,673,883              10               23         .025398678
      7           L1               1,644,198        1.0889             1,509,962              10               40         .018879559
      8           L1               1,812,729        1.0646             1,702,732               6               11         .007681790
      9           L1               1,689,217        1.1267             1,499,261               2                3         .016372190
  RANDOM TOTALS:                  85,116,241                          89,285,922             109          180,411
  CATG J  EXCEPTION VALUES:        7,298,549                           6,638,021
  CATG D1 EXCEPTION VALUES:       49,020,438                          48,995,378
  CATG L1 EXCEPTION VALUES:        8,207,543                           8,207,543
 TOTAL TEST VALUES (4):          149,642,771                         153,126,864
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:            7,656,343
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            145,470,521 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             149,642,771 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            160,783,207 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             151,172,123 (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