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DATE: 01/27/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:59:27                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              071/El Paso                                               VRSN:      W
                                                        071-902/El Paso ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A            1,624,338,153        0.9366         1,734,292,284              65           24,152         .007543339
      2           A            1,624,285,818        0.9312         1,744,293,189              65           16,560         .009028284
      3           A            1,624,269,076        0.9297         1,747,089,465              64           11,057         .004565960
      4           A            1,624,160,415        0.9236         1,758,510,627              64            5,545         .005192386
      5           B              146,692,178        0.8704           168,534,212              27            1,918         .015251022
      6           B              146,571,535        0.8838           165,842,425              22              851         .057075600
      7           B              151,644,808        0.8982           168,831,895              11               93         .014618518
      8           B              141,457,444        0.9494           148,996,676               7               16         .002219361
      9           F1             545,038,298        0.8780           620,772,549              14            1,962         .037015975
     10           F1             545,656,506        0.8769           622,256,250               7              504         .027759836
     11           F1             548,296,204        0.9251           592,688,579              10              157         .014366109
     12           F1             540,840,866        0.8798           614,731,605               6               35         .001807977
     13           L1           1,207,672,717        1.1474         1,052,529,821              11           10,741         .015983534
  RANDOM TOTALS:              10,470,924,018                      11,139,369,577             373           73,591
  CATG D1 EXCEPTION VALUES:          285,927                             348,164
 TOTAL TEST VALUES (4):       10,471,209,945                      11,139,717,741
 MARGIN OF ERROR PERCENT:          5.0000000
 MARGIN OF ERROR VALUE:          556,985,887
 CONFIDENCE INTERVAL VALUES (5):
   LOCAL TEST VALUE:          10,471,209,945 (OUTSIDE CONFIDENCE INTERVAL)
   STATE LOWER LIMIT:         10,582,731,854 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   STATE UPPER LIMIT:         11,696,703,628 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):          10,171,864,735 (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