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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:38:18                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              030/Callahan                                              VRSN:      W
                                                        030-902/Clyde ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               19,640,612        0.9511            20,650,417              13              620         .070307854
      2           A               19,660,917        0.9417            20,878,111              13              345         .003111289
      3           A               19,618,776        0.9481            20,692,729              14              252         .005719214
      4           A               19,604,281        0.9570            20,485,142              27              168         .003053766
      5           D3              62,117,181        1.0106            61,465,645              37            3,636         .016735230
      6           F1               3,024,756        0.9655             3,132,839               9               90         .001191446
      7           F1               2,956,710        0.9733             3,037,820               7               32         .000556566
      8           F1               3,238,415        0.9876             3,279,076               8               14         .000253208
      9           F1               2,691,305        0.9630             2,794,709               3                5         .000335316
     10           L1               2,981,540        1.0250             2,908,820               8               91         .009004293
     11           L1               3,022,330        1.0623             2,845,081               7               22         .031346307
  RANDOM TOTALS:                 158,556,823                         162,170,389             146            5,275
  CATG J  EXCEPTION VALUES:        9,377,050                           9,798,994
  CATG D1 EXCEPTION VALUES:       10,673,984                           9,702,524
  CATG L1 EXCEPTION VALUES:        4,636,880                           4,698,384
 TOTAL TEST VALUES (4):          183,244,737                         186,370,291
 MARGIN OF ERROR PERCENT:          5.0000002
 MARGIN OF ERROR VALUE:            9,318,515
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            177,051,776 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             183,244,737 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            195,688,806 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             161,998,762 (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