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DATE: 01/23/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 11:40:14                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              231/Upton                                                 VRSN:      W
                                                        231-902/Rankin ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                1,780,135        0.8050             2,211,348               7              133         .017639090
      2           A                1,748,669        0.8300             2,106,830               8               70         .011035657
      3           A                1,768,335        0.8456             2,091,219              10               48         .010914510
      4           A                1,749,610        0.8586             2,037,747               9               28         .024355126
      5           G1             149,909,589        1.0139           147,854,413               7              258         .002896891
      6           G1             153,817,197        1.0709           143,633,576               6               43         .024514441
      7           G1             184,996,369        1.0072           183,673,917               4               11         .000163428
  RANDOM TOTALS:                 495,769,904                         483,609,050              51              591
  CATG J  EXCEPTION VALUES:       13,261,988                          13,762,632
  CATG D1 EXCEPTION VALUES:        1,829,480                           5,810,185
  CATG G1 EXCEPTION VALUES:      105,324,640                         108,621,268
 TOTAL TEST VALUES (4):          616,186,012                         611,803,135
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           30,590,157
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            581,212,978 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             616,186,012 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            642,393,292 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             670,189,129 (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