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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:41:20                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              043/Collin                                                VRSN:      W
                                                        043-911/Princeton ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A               62,991,723        0.9909            63,570,212              22            1,014         .004363878
      2           A               62,933,237        0.9859            63,833,286              31              663         .017295520
      3           A               62,889,707        0.9867            63,737,415              21              492         .002045956
      4           A               62,864,120        1.0020            62,738,643              29              357         .003418198
      5           C                4,464,281        1.0055             4,439,862               7              375         .027427548
      6           C                4,417,695        1.0002             4,416,812               8              190         .039015972
      7           C                4,028,363        0.8848             4,552,851               8              134         .157902046
      8           C                4,277,466        1.0022             4,268,076               6               58         .000186865
      9           D3              53,101,202        0.8746            60,714,843              16            1,341         .073161246
     10           F1               5,381,931        1.0015             5,373,870               6               47         .001307020
     11           F1               5,544,611        0.9813             5,650,271               5               17         .014498016
     12           F1               5,507,773        1.0234             5,381,838               4                9         .001596400
     13           F1               4,970,911        0.7791             6,380,325               2                3         .006776711
  RANDOM TOTALS:                 343,373,020                         355,058,304             165            4,700
  CATG J  EXCEPTION VALUES:            5,390                               5,593
  CATG D1 EXCEPTION VALUES:        2,342,709                           2,113,104
 TOTAL TEST VALUES (4):          345,721,119                         357,177,001
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:           17,858,850
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:            339,318,151 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:             345,721,119 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:            375,035,851 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):             362,953,336 (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