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2009 Confidence Interval Detail
007/Atascosa
015-909/Somerset ISD

Category Summary

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

Stratum
Variance
A 19,129,290 0.8047 23,771,952 13 573 .134632785
A 19,946,190 0.7745 25,753,635 12 312 .086750926
A 15,874,910 0.8026 19,779,355 7 161 .081418391
A 15,930,990 1.0628 14,989,641 7 94 .053915082
D3 26,160,250 0.9033 28,960,755 20 807 .292374981
Random Totals: 97,041,630   113,255,338 59 1,947  
Catg D1 Exception Values: 1,072,150   1,061,049      
Total Test Values (4): 98,113,780   114,316,387      

Margin of Error

Margin of Error Percent: 9.3208518
Margin of Error Value: 10,655,261

Confidence Interval Values (5)

Local Test Value: 98,113,780 (Outside Confidence Interval)
State Lower Limit: 103,661,126 (State Test Value minus Margin of Error Percent)
State Upper Limit: 124,971,648 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 94,414,797 (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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