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2007 Confidence Interval Detail
071/El Paso
071-904/San Elizario ISD

Category Summary

(1)
Category
(1)
Local
Value
(1)
Stratum
Ratio
(1)
State
Value
(2)
Sample
Size
(3)
Total
Parcels

Stratum
Variance
A 27,273,471 0.8310 32,820,061 18 1,227 .114032274
A 27,249,780 0.8444 32,271,175 17 666 .032264447
A 27,263,658 1.0510 25,940,683 18 395 .024582059
A 27,227,440 1.1790 23,093,673 21 259 .044918861
C 1,985,086 0.9310 2,132,208 7 155 .052510732
C 1,952,590 0.7737 2,523,704 9 127 .185435285
C 1,948,305 1.3159 1,480,587 7 117 .012048971
C 1,961,080 1.0050 1,951,323 7 90 .020372104
D3 7,657,185 1.0223 7,490,155 18 595 .011650286
Random Totals: 124,518,595   129,703,569 122 3,631  
Catg D1 Exception Values: 3,242,179   3,138,707      
Total Test Values (4): 127,760,774   132,842,276      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 6,642,114

Confidence Interval Values (5)

State Lower Limit: 126,200,162 (State Test Value minus Margin of Error Percent)
Local Test Value: 127,760,774 (Within Confidence Interval)
State Upper Limit: 139,484,390 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 127,477,179 (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
(6) Includes local value of unstudied property categories and sub-categories

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