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2011 Confidence Interval Detail
226/Tom Green
226-903/San Angelo ISD

Category Summary

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

Stratum
Variance
A 623,493,098 0.9756 639,086,816 45 10,528 .005631197
A 670,701,098 0.9742 688,463,455 49 6,467 .007779829
A 736,482,295 0.9843 748,229,498 50 4,761 .003439783
A 722,199,956 0.9816 735,737,526 46 2,549 .003009570
F1 148,959,657 0.9410 158,299,317 25 1,086 .035747413
F1 152,258,816 1.0098 150,781,161 13 275 .012359349
F1 152,718,250 0.8686 175,821,149 10 77 .047459599
F1 160,914,068 1.0039 160,288,941 9 22 .009916287
L1 83,163,849 0.9822 84,670,993 10 939 .006838365
L1 79,087,092 0.9954 79,452,574 10 185 .001815048
L1 114,859,962 0.9744 117,877,629 10 69 .032750922
L1 64,951,355 0.9913 65,521,391 5 9 .006679313
Random Totals: 3,709,789,496   3,804,230,450 282 26,967  
Catg D1 Exception Values: 7,631,690   6,907,065      
Total Test Values (4): 3,717,421,186   3,811,137,515      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 190,556,876

Confidence Interval Values (5)

State Lower Limit: 3,620,580,639 (State Test Value minus Margin of Error Percent)
Local Test Value: 3,717,421,186 (Within Confidence Interval)
State Upper Limit: 4,001,694,391 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,542,638,679 (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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