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2009 Confidence Interval Detail
050/Coryell
050-902/Gatesville ISD

Category Summary

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

Stratum
Variance
A 98,585,876 0.9771 100,896,404 12 1,949 .007992767
A 88,198,598 0.9462 93,213,483 19 1,069 .004981359
A 82,508,450 0.9277 88,938,719 9 692 .004361755
A 85,394,842 0.9602 88,934,432 8 426 .002951621
D3 77,150,186 0.9689 79,626,572 15 4,742 .017111378
F1 20,061,758 0.9869 20,328,056 7 175 .002578053
F1 22,633,220 0.9826 23,034,012 6 60 .003743068
F1 22,982,267 0.9604 23,929,891 5 15 .000479619
F1 14,659,330 0.9719 15,083,167 3 3 .000344107
L1 11,751,890 1.0140 11,589,635 7 203 .012638250
L1 10,737,550 0.9620 11,161,694 6 37 .004940698
L1 8,277,330 0.9794 8,451,429 4 9 .003937997
Random Totals: 542,941,297   565,187,494 101 9,380  
Catg D1 Exception Values: 20,924,683   20,632,511      
Catg L1 Exception Values: 10,297,230   10,410,591      
Total Test Values (4): 574,163,210   596,230,596      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 29,811,530

Confidence Interval Values (5)

State Lower Limit: 566,419,066 (State Test Value minus Margin of Error Percent)
Local Test Value: 574,163,210 (Within Confidence Interval)
State Upper Limit: 626,042,126 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 558,807,259 (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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