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2009 Confidence Interval Detail
069/Edwards
069-901/Rocksprings ISD

Category Summary

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

Stratum
Variance
A 4,100,004 0.9857 4,159,485 10 223 .181009244
A 4,147,964 0.9334 4,443,930 11 124 .062579948
A 3,776,290 0.8492 4,446,879 8 73 .011903252
A 4,041,483 0.9654 4,186,330 10 49 .035039074
D3 99,244,096 1.0149 97,787,069 70 6,338 .445717631
G1 29,890,160 1.0229 29,220,999 14 176 .027517712
G1 30,311,540 1.0084 30,059,044 12 67 .008203317
G1 29,493,300 1.0365 28,454,703 10 29 .006746010
G1 29,681,430 0.9736 30,486,267 7 14 .002222068
Random Totals: 234,686,267   233,244,706 152 7,093  
Catg J Exception Values: 14,566,671   12,326,489      
Catg D1 Exception Values: 32,562,053   37,923,798      
Total Test Values (4): 281,814,991   283,494,993      

Margin of Error

Margin of Error Percent: 5.4980537
Margin of Error Value: 15,586,707

Confidence Interval Values (5)

State Lower Limit: 267,908,286 (State Test Value minus Margin of Error Percent)
Local Test Value: 281,814,991 (Within Confidence Interval)
State Upper Limit: 299,081,700 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 320,143,793 (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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