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2010 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 3,895,230 0.9847 3,955,753 22 453 .081563551
G1 42,539,057 1.0948 38,855,551 7 24 .011314007
G1 45,534,272 1.0527 43,254,747 5 12 .028116783
G1 43,376,930 1.0583 40,987,367 4 6 .006620792
G1 36,483,060 1.2689 28,751,722 2 3 .030788275
Random Totals: 171,828,549   155,805,140 40 498  
Catg J Exception Values: 64,550   60,611      
Catg D1 Exception Values: 7,219,150   9,368,063      
Total Test Values (4): 179,112,249   165,233,814      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 8,261,691

Confidence Interval Values (5)

State Lower Limit: 156,972,123 (State Test Value minus Margin of Error Percent)
State Upper Limit: 173,495,505 (State Test Value plus Margin of Error Percent)
Local Test Value: 179,112,249 (Outside Confidence Interval)
Value Assigned (6): 182,744,430 (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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