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2007 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 5,065,008 0.9568 5,293,696 10 185 .001071873
A 4,995,782 0.9778 5,109,206 15 81 .000616685
A 5,221,516 0.9757 5,351,559 10 40 .001194677
A 4,830,571 1.0629 4,544,709 6 12 .004831632
D3 18,109,326 0.9883 18,323,713 12 3,369 .000176101
F1 2,710,579 0.9436 2,872,593 8 29 .001149705
F1 2,901,459 0.9789 2,963,999 4 10 .000025661
L1 776,392 1.0454 742,675 5 24 .004162714
L1 2,571,555 1.1058 2,325,515 2 4 .005073507
Random Totals: 47,182,188   47,527,665 72 3,754  
Catg D1 Exception Values: 188,882   235,270      
Catg F1 Exception Values: 7,149,248   7,404,835      
Catg L1 Exception Values: 1,007,709   1,014,548      
Total Test Values (4): 55,528,027   56,182,318      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 2,809,116

Confidence Interval Values (5)

State Lower Limit: 53,373,202 (State Test Value minus Margin of Error Percent)
Local Test Value: 55,528,027 (Within Confidence Interval)
State Upper Limit: 58,991,434 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 62,356,963 (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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