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2008 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 57,837,665 1.0151 56,977,308 18 1,154 .048141671
A 49,956,600 1.0348 48,276,575 15 508 .008453940
A 76,931,730 0.9266 83,025,826 15 561 .034240739
A 89,765,510 1.0084 89,017,761 15 398 .021423891
C 19,671,449 1.0354 18,998,888 36 2,153 .080838741
C 13,873,590 1.1112 12,485,232 14 462 .016735455
C 21,337,650 1.0003 21,331,251 12 378 .015922823
C 10,772,750 1.0047 10,722,355 9 106 .005099787
D3 49,571,089 0.9757 50,805,667 24 3,124 .013794508
G1 15,519,730 0.9414 16,485,798 7 18 .060840244
G1 16,518,710 1.0165 16,250,576 3 5 .000987649
Random Totals: 421,756,473   424,377,237 168 8,867  
Catg J Exception Values: 21,179,341   12,993,769      
Catg D1 Exception Values: 16,146,802   18,324,656      
Catg G1 Exception Values: 40,148,418   39,998,055      
Total Test Values (4): 499,231,034   495,693,776      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,784,689

Confidence Interval Values (5)

State Lower Limit: 470,909,087 (State Test Value minus Margin of Error Percent)
Local Test Value: 499,231,034 (Within Confidence Interval)
State Upper Limit: 520,478,465 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 551,827,968 (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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