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2011 Confidence Interval Detail
126/Johnson
126-901/Alvarado ISD

Category Summary

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

Stratum
Variance
A 114,657,414 1.0032 114,291,681 16 1,902 .062085163
A 100,680,436 1.1166 90,166,968 25 1,097 .036519404
A 106,523,248 0.9241 115,272,425 11 805 .031531980
A 112,832,708 1.0101 111,704,493 9 499 .008181700
D3 130,794,222 0.9825 133,123,890 15 2,314 .030237597
F1 19,123,616 0.7354 26,004,373 10 130 .158426620
F1 19,795,639 0.9790 20,220,265 9 55 .080439488
F1 17,518,256 0.8570 20,441,372 8 25 .017646787
G1 90,337,532 0.9822 91,974,681 11 165 .004978784
G1 90,246,756 1.0015 90,111,589 9 82 .001950054
G1 90,808,247 0.9975 91,035,837 8 52 .008041147
G1 87,948,263 1.0283 85,527,826 7 29 .003011065
Random Totals: 981,266,337   989,875,400 138 7,155  
Catg J Exception Values: 29,069,561   27,244,886      
Catg D1 Exception Values: 4,070,164   3,525,864      
Catg F1 Exception Values: 20,486,034   22,152,213      
Total Test Values (4): 1,034,892,096   1,042,798,363      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 52,139,918

Confidence Interval Values (5)

State Lower Limit: 990,658,445 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,034,892,096 (Within Confidence Interval)
State Upper Limit: 1,094,938,281 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 1,445,964,291 (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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