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2008 Confidence Interval Detail
254/Zavala
254-902/La Pryor ISD

Category Summary

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

Stratum
Variance
A 2,414,415 0.8688 2,779,023 7 195 .167739789
A 2,417,165 0.8154 2,964,392 7 106 .065877661
A 2,476,406 0.9740 2,542,511 6 73 .020459361
A 2,481,647 0.8715 2,847,558 6 40 .009941748
D3 9,760,159 0.9348 10,440,906 13 842 .075955559
Random Totals: 19,549,792   21,574,390 39 1,256  
Catg J Exception Values: 4,878,278   4,788,202      
Catg D1 Exception Values: 12,055,693   12,982,507      
Total Test Values (4): 36,483,763   39,345,099      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 1,967,255

Confidence Interval Values (5)

Local Test Value: 36,483,763 (Outside Confidence Interval)
State Lower Limit: 37,377,844 (State Test Value minus Margin of Error Percent)
State Upper Limit: 41,312,354 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 39,600,232 (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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