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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 1.0017 12,296,907 16 484 .035716221
A 12,925,128 0.7738 16,703,448 15 261 .107050140
A 17,131,571 0.8811 19,443,390 16 230 .011220328
A 11,986,451 0.8950 13,392,683 15 83 .024429194
D3 20,193,304 0.9661 20,901,878 20 1,496 .061729318
Random Totals: 74,554,266   82,738,306 82 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   95,619,675      

Margin of Error

Margin of Error Percent: 5.0000003
Margin of Error Value: 4,780,984

Confidence Interval Values (5)

Local Test Value: 87,696,711 (Outside Confidence Interval)
State Lower Limit: 90,838,691 (State Test Value minus Margin of Error Percent)
State Upper Limit: 100,400,659 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 85,117,266 (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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