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2009 Confidence Interval Detail
158/Matagorda
158-902/Tidehaven ISD

Category Summary

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

Stratum
Variance
A 16,304,560 0.9064 17,988,261 9 433 .050172870
A 16,919,310 0.9587 17,648,180 9 248 .034088989
A 16,796,820 0.9194 18,269,328 10 149 .012992634
A 17,004,420 1.0191 16,685,723 10 93 .008422680
D3 43,848,673 0.8953 48,976,514 22 2,950 .016849102
G1 20,401,270 1.0022 20,356,486 5 25 .020920876
G1 19,011,330 1.0308 18,443,277 4 9 .004800992
G1 19,670,490 1.0772 18,260,759 3 6 .110802520
G1 17,278,650 1.0440 16,550,431 2 3 .000814620
Random Totals: 187,235,523   193,178,959 74 3,916  
Catg J Exception Values: 53,622,249   54,489,807      
Catg D1 Exception Values: 26,305,244   29,089,370      
Catg G1 Exception Values: 40,622,420   41,452,227      
Total Test Values (4): 307,785,436   318,210,363      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 15,910,518

Confidence Interval Values (5)

State Lower Limit: 302,299,845 (State Test Value minus Margin of Error Percent)
Local Test Value: 307,785,436 (Within Confidence Interval)
State Upper Limit: 334,120,881 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 819,265,948 (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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