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2006 Confidence Interval Detail
158/Matagorda
158-906/Van Vleck ISD

Category Summary

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

Stratum
Variance
A 53,826,137 0.9543 56,403,790 18 1,155 .048185633
A 53,861,125 0.9383 57,402,883 24 596 .020675476
A 53,805,249 0.8812 61,059,066 25 408 .077591177
A 53,780,053 0.9681 55,552,167 15 245 .006700904
C 10,535,011 0.9566 11,012,974 26 2,102 .031870764
C 9,153,504 0.9473 9,662,730 35 628 .073712547
C 12,735,847 1.1108 11,465,473 18 350 .066683036
C 6,934,082 0.9667 7,172,941 24 131 .121898090
D3 31,063,149 1.0092 30,779,973 23 3,028 .039597001
G1 12,146,370 1.0151 11,965,688 6 14 .003435793
G1 13,860,200 1.0420 13,301,536 4 6 .010120214
G1 12,697,810 1.0255 12,382,067 2 3 .001215044
Random Totals: 324,398,537   338,161,288 220 8,666  
Catg J Exception Values: 13,107,487   12,837,286      
Catg D1 Exception Values: 16,510,709   17,417,221      
Catg G1 Exception Values: 29,307,712   27,771,155      
Total Test Values (4): 383,324,445   396,186,950      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 19,809,348

Confidence Interval Values (5)

State Lower Limit: 376,377,602 (State Test Value minus Margin of Error Percent)
Local Test Value: 383,324,445 (Within Confidence Interval)
State Upper Limit: 415,996,298 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 420,451,307 (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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