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2007 Confidence Interval Detail
008/Austin
008-901/Bellville ISD

Category Summary

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

Stratum
Variance
A 73,603,144 0.9180 80,177,717 20 952 .030780327
A 73,464,290 0.9526 77,119,767 27 571 .021775856
A 73,651,991 0.9957 73,970,062 22 411 .009521785
A 73,371,952 0.9503 77,209,252 21 250 .014684215
D3 345,032,536 0.9977 345,827,940 39 13,502 .046300828
G1 10,039,190 0.6337 15,842,181 6 28 .154924434
G1 10,812,410 1.3210 8,185,019 4 10 .086607024
G1 9,883,359 1.0048 9,836,146 3 4 .009378641
Random Totals: 669,858,872   688,168,084 142 15,728  
Catg J Exception Values: 21,269,759   21,598,633      
Catg D1 Exception Values: 24,408,970   20,209,207      
Catg G1 Exception Values: 8,650,030   7,498,298      
Total Test Values (4): 724,187,631   737,474,222      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 36,873,711

Confidence Interval Values (5)

State Lower Limit: 700,600,511 (State Test Value minus Margin of Error Percent)
Local Test Value: 724,187,631 (Within Confidence Interval)
State Upper Limit: 774,347,933 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 757,702,443 (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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