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2008 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 61,946,250 0.9124 67,893,742 24 818 .038359299
A 71,005,297 0.9522 74,569,730 23 564 .012598966
A 95,580,446 1.0053 95,076,540 29 538 .011893835
A 124,300,864 0.9628 129,103,515 11 412 .033910313
D3 394,362,819 1.0102 390,380,933 22 8,662 .013439595
Random Totals: 747,195,676   757,024,460 109 10,994  
Catg D1 Exception Values: 23,391,153   22,842,917      
Total Test Values (4): 770,586,829   779,867,377      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 38,993,369

Confidence Interval Values (5)

State Lower Limit: 740,874,008 (State Test Value minus Margin of Error Percent)
Local Test Value: 770,586,829 (Within Confidence Interval)
State Upper Limit: 818,860,746 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 877,386,153 (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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