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2007 Confidence Interval Detail
156/Martin
058-909/Sands ISD

Category Summary

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

Stratum
Variance
D3 11,720,821 0.8775 13,357,061 10 1,559 .038227177
G1 25,937,301 0.9538 27,193,648 6 54 .062680281
G1 24,722,040 1.0154 24,347,095 4 11 .000740106
G1 31,528,842 1.0160 31,032,325 3 5 .004057142
Random Totals: 93,909,004   95,930,129 23 1,629  
Catg D1 Exception Values: 13,430,700   20,215,466      
Catg G1 Exception Values: 44,558,106   42,588,688      
Total Test Values (4): 151,897,810   158,734,283      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,936,714

Confidence Interval Values (5)

State Lower Limit: 150,797,569 (State Test Value minus Margin of Error Percent)
Local Test Value: 151,897,810 (Within Confidence Interval)
State Upper Limit: 166,670,997 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 168,482,128 (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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