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2011 Confidence Interval Detail
082/Frio
082-902/Dilley ISD

Category Summary

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

Stratum
Variance
A 6,593,770 0.9252 7,126,859 10 320 .013742462
A 7,029,050 0.9483 7,412,264 10 173 .009924821
A 7,338,410 0.9676 7,584,136 10 115 .011330403
A 8,193,800 0.9841 8,326,186 10 71 .006765159
D3 19,489,530 0.9566 20,373,751 16 1,334 .000853212
F1 2,816,120 0.9371 3,005,144 9 60 .039376011
F1 2,404,300 0.8986 2,675,606 6 16 .019329344
F1 3,863,470 0.9572 4,036,220 4 9 .008253595
G1 2,341,160 0.8834 2,650,170 6 16 .082211570
G1 2,709,590 1.0111 2,679,844 5 10 .027847223
G1 2,450,620 1.0181 2,407,052 3 4 .005942599
Random Totals: 65,229,820   68,277,232 89 2,128  
Catg J Exception Values: 9,929,987   10,408,359      
Catg D1 Exception Values: 16,792,350   18,016,631      
Catg F1 Exception Values: 2,441,380   2,299,591      
Catg G1 Exception Values: 4,619,360   4,584,946      
Total Test Values (4): 99,012,897   103,586,759      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,179,338

Confidence Interval Values (5)

State Lower Limit: 98,407,421 (State Test Value minus Margin of Error Percent)
Local Test Value: 99,012,897 (Within Confidence Interval)
State Upper Limit: 108,766,097 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 144,332,574 (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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