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2009 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 67,897,445 0.9404 72,200,601 17 1,186 .106499132
A 68,332,356 0.9635 70,920,971 16 609 .029414329
A 69,381,600 0.9741 71,226,363 17 444 .006377869
A 73,538,400 1.0100 72,810,297 16 295 .011839663
C 14,231,671 0.9844 14,457,203 7 1,843 .100523746
C 19,652,320 1.0488 18,737,910 7 772 .004524327
C 20,792,090 1.0529 19,747,450 7 368 .011320135
C 11,089,140 1.0246 10,822,897 8 108 .017167130
D3 49,457,919 0.9851 50,205,988 13 3,127 .006652566
G1 25,445,500 1.0155 25,057,115 5 21 .028996922
G1 33,468,750 1.0429 32,092,003 4 7 .050780374
Random Totals: 453,287,191   458,278,798 117 8,780  
Catg J Exception Values: 12,758,648   12,596,649      
Catg D1 Exception Values: 16,140,116   19,153,318      
Catg G1 Exception Values: 36,837,014   23,302,898      
Total Test Values (4): 519,022,969   513,331,663      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 25,666,583

Confidence Interval Values (5)

State Lower Limit: 487,665,080 (State Test Value minus Margin of Error Percent)
Local Test Value: 519,022,969 (Within Confidence Interval)
State Upper Limit: 538,998,246 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 580,456,267 (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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