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2006 Confidence Interval Detail
070/Ellis
070-901/Avalon ISD

Category Summary

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

Stratum
Variance
A 2,484,674 0.9004 2,759,522 9 56 .064929749
A 2,500,983 0.9221 2,712,269 9 37 .017531683
A 2,572,793 0.9843 2,613,830 10 26 .031556123
A 2,374,843 1.0157 2,338,134 7 13 .011185125
D3 10,230,523 0.9517 10,749,735 23 599 .010667451
Random Totals: 20,163,816   21,173,490 58 731  
Catg J Exception Values: 1,548,404   1,526,794      
Catg D1 Exception Values: 3,607,750   4,259,676      
Catg F1 Exception Values: 3,371,310   2,975,274      
Total Test Values (4): 28,691,280   29,935,234      

Margin of Error

Margin of Error Percent: 5.0000010
Margin of Error Value: 1,496,762

Confidence Interval Values (5)

State Lower Limit: 28,438,472 (State Test Value minus Margin of Error Percent)
Local Test Value: 28,691,280 (Within Confidence Interval)
State Upper Limit: 31,431,996 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 29,896,402 (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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