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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:38:00                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              028/Caldwell                                              VRSN:      W
                                                        028-903/Luling ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               24,549,474        1.0191            24,089,367              11              647         .061142157
      2           A               24,570,733        0.9976            24,629,845              10              369         .019224521
      3           A               24,505,852        0.8874            27,615,339              11              270         .023121739
      4           A               24,481,249        0.9694            25,254,022              10              186         .039479857
      5           D3              54,735,255        0.9144            59,859,203              20            2,147         .038895793
      6           F1               5,540,758        0.9656             5,738,150               9              135         .020233597
      7           F1               5,526,947        0.8635             6,400,633               6               67         .033173831
      8           F1               5,580,593        0.9386             5,945,656               6               29         .003432336
      9           F1               5,473,003        0.8950             6,115,087               4                9         .022101888
     10           G1               5,807,070        0.9558             6,075,612               6               86         .102212030
     11           G1               5,984,190        1.0805             5,538,353               5               23         .010754154
     12           G1               6,661,410        1.0052             6,626,950               4                8         .001392414
  RANDOM TOTALS:                 193,416,534                         203,888,217             102            3,976
  CATG J  EXCEPTION VALUES:       10,505,190                          10,131,156
  CATG D1 EXCEPTION VALUES:        3,648,984                           4,181,339
  CATG G1 EXCEPTION VALUES:        4,708,710                           4,332,424
 TOTAL TEST VALUES (4):          212,279,418                         222,533,136
 MARGIN OF ERROR PERCENT:          5.0000001
 MARGIN OF ERROR VALUE:           11,126,657
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            211,406,479 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             212,279,418 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            233,659,793 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             224,380,105 (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