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2011 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 5,163,948 0.7486 6,898,141 10 188 .192433547
A 5,232,039 0.9264 5,647,710 10 91 .018819267
A 6,439,085 0.9604 6,704,587 11 64 .013575057
A 3,595,836 1.0878 3,305,604 9 17 .004987005
D3 21,512,521 1.0146 21,202,958 18 3,394 .031434943
F1 2,636,270 0.3330 7,916,727 8 38 3.653864131
F1 2,914,826 0.7374 3,952,842 5 12 .227124155
F1 2,862,070 0.7168 3,992,843 3 5 .014013730
Random Totals: 50,356,595   59,621,412 74 3,809  
Catg D1 Exception Values: 217,330   280,111      
Catg F1 Exception Values: 2,073,266   1,801,414      
Total Test Values (4): 52,647,191   61,702,937      

Margin of Error

Margin of Error Percent: 16.0988722
Margin of Error Value: 9,933,477

Confidence Interval Values (5)

State Lower Limit: 51,769,460 (State Test Value minus Margin of Error Percent)
Local Test Value: 52,647,191 (Within Confidence Interval)
State Upper Limit: 71,636,414 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 62,181,685 (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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