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2009 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 5,400,747 0.9236 5,847,496 7 196 .003500238
A 5,717,858 0.9513 6,010,573 7 94 .002201746
A 8,681,491 1.0160 8,544,775 11 61 .001837817
D3 21,689,781 0.9857 22,004,445 16 3,380 .000645415
F1 3,528,560 0.9454 3,732,346 6 40 .000877186
F1 2,962,525 0.9687 3,058,248 5 8 .000322578
F1 3,542,066 0.9736 3,638,112 3 4 .000393245
Random Totals: 51,523,028   52,835,995 55 3,783  
Catg D1 Exception Values: 213,770   272,673      
Total Test Values (4): 51,736,798   53,108,668      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,655,433

Confidence Interval Values (5)

State Lower Limit: 50,453,235 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,736,798 (Within Confidence Interval)
State Upper Limit: 55,764,101 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 59,080,645 (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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