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2008 Confidence Interval Detail
022/Brewster
022-004/Terlingua CSD

Category Summary

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

Stratum
Variance
A 5,108,971 0.8132 6,282,552 7 188 .225165965
A 4,939,480 1.1640 4,243,540 7 84 .001288124
A 5,077,727 1.1564 4,390,978 6 47 .001086796
A 5,849,054 1.1854 4,934,245 5 21 .001665326
D3 18,180,250 0.9587 18,963,440 10 3,366 .003378136
F1 3,787,862 0.9389 4,034,361 7 37 .001377239
F1 3,213,373 0.9165 3,506,135 4 7 .001135974
F1 2,560,888 0.9858 2,597,776 2 3 .000100130
L1 693,325 1.1003 630,124 7 24 .002536831
L1 375,844 1.0971 342,580 2 2 .004362860
Random Totals: 49,786,774   49,925,731 57 3,779  
Catg D1 Exception Values: 206,685   250,669      
Catg F1 Exception Values: 2,859,679   2,913,948      
Catg L1 Exception Values: 1,421,260   1,348,298      
Total Test Values (4): 54,274,398   54,438,646      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,721,932

Confidence Interval Values (5)

State Lower Limit: 51,716,714 (State Test Value minus Margin of Error Percent)
Local Test Value: 54,274,398 (Within Confidence Interval)
State Upper Limit: 57,160,578 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 61,818,971 (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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