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2009 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 2,407,175 1.0683 2,253,276 8 193 .025553995
A 2,422,576 1.0140 2,389,128 7 105 .005016200
A 2,392,896 0.9581 2,497,543 7 70 .007089605
A 2,560,421 0.9345 2,739,883 7 41 .001103651
D3 13,275,397 1.2414 10,693,892 25 845 .019887014
Random Totals: 23,058,465   20,573,722 54 1,254  
Catg J Exception Values: 4,862,103   5,073,857      
Catg D1 Exception Values: 11,888,958   14,256,365      
Total Test Values (4): 39,809,526   39,903,944      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,995,197

Confidence Interval Values (5)

State Lower Limit: 37,908,747 (State Test Value minus Margin of Error Percent)
Local Test Value: 39,809,526 (Within Confidence Interval)
State Upper Limit: 41,899,141 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 43,545,879 (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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