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2009 Confidence Interval Detail
214/Starr
214-902/San Isidro ISD

Category Summary

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

Stratum
Variance
D3 3,475,490 1.0794 3,219,835 21 1,982 .021168154
G1 50,796,147 1.0684 47,544,129 11 106 .172370659
G1 49,854,031 1.0555 47,232,621 9 40 .011255035
G1 52,137,612 1.0277 50,732,327 7 18 .012961148
G1 47,101,030 0.9752 48,298,841 4 6 .004701947
Random Totals: 203,364,310   197,027,753 52 2,152  
Catg J Exception Values: 621,180   642,424      
Catg D1 Exception Values: 16,312,610   16,721,521      
Total Test Values (4): 220,298,100   214,391,698      

Margin of Error

Margin of Error Percent: 5.7602123
Margin of Error Value: 12,349,417

Confidence Interval Values (5)

State Lower Limit: 202,042,281 (State Test Value minus Margin of Error Percent)
Local Test Value: 220,298,100 (Within Confidence Interval)
State Upper Limit: 226,741,115 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 274,615,852 (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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