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2008 Confidence Interval Detail
205/San Patricio
205-904/Mathis ISD

Category Summary

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

Stratum
Variance
A 35,186,892 1.0835 32,475,212 14 1,200 .075144077
A 35,827,441 1.0554 33,946,789 14 686 .037727269
A 36,017,610 0.9316 38,662,097 14 447 .024062430
A 36,301,912 1.0041 36,153,682 9 230 .003802625
D3 13,739,959 0.9091 15,113,804 22 1,046 .023046071
F1 6,272,616 0.9439 6,645,424 9 93 .038750595
F1 5,198,508 1.0098 5,148,057 6 28 .014610717
F1 5,543,485 0.9287 5,969,080 5 16 .006177212
F1 5,770,600 0.8995 6,415,342 3 6 .000205567
Random Totals: 179,859,023   180,529,487 96 3,752  
Catg J Exception Values: 11,594,099   11,590,457      
Catg D1 Exception Values: 17,343,687   17,557,874      
Total Test Values (4): 208,796,809   209,677,818      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 10,483,891

Confidence Interval Values (5)

State Lower Limit: 199,193,927 (State Test Value minus Margin of Error Percent)
Local Test Value: 208,796,809 (Within Confidence Interval)
State Upper Limit: 220,161,709 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 199,191,497 (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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