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2009 Confidence Interval Detail
003/Angelina
003-906/Zavalla ISD

Category Summary

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

Stratum
Variance
A 12,317,812 1.0360 11,889,780 15 484 .020872660
A 12,925,128 0.8833 14,632,773 13 261 .017607246
A 17,131,571 0.8870 19,314,060 15 230 .011002187
A 11,986,451 0.8984 13,341,998 15 83 .022457364
D3 20,193,304 0.9688 20,843,625 17 1,496 .062266870
Random Totals: 74,554,266   80,022,236 75 2,554  
Catg J Exception Values: 2,471,110   2,450,710      
Catg D1 Exception Values: 10,671,335   10,430,659      
Total Test Values (4): 87,696,711   92,903,605      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,645,180

Confidence Interval Values (5)

Local Test Value: 87,696,711 (Outside Confidence Interval)
State Lower Limit: 88,258,425 (State Test Value minus Margin of Error Percent)
State Upper Limit: 97,548,785 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 83,606,404 (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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