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2009 Confidence Interval Detail
212/Smith
234-906/Van ISD

Category Summary

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

Stratum
Variance
A 7,480,605 0.7791 9,601,598 7 188 .061242053
A 7,215,858 0.8422 8,567,867 6 80 .022176047
A 6,787,053 0.9051 7,498,677 6 46 .006911474
A 7,583,995 1.0119 7,494,807 5 22 .026090303
D3 41,802,323 1.0283 40,651,875 23 1,424 .047437808
Random Totals: 70,869,834   73,814,824 47 1,760  
Catg D1 Exception Values: 2,801,822   2,564,052      
Total Test Values (4): 73,671,656   76,378,876      

Margin of Error

Margin of Error Percent: 5.6971053
Margin of Error Value: 4,351,385

Confidence Interval Values (5)

State Lower Limit: 72,027,491 (State Test Value minus Margin of Error Percent)
Local Test Value: 73,671,656 (Within Confidence Interval)
State Upper Limit: 80,730,261 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 66,910,999 (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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