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2011 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 41,052,094 0.9300 44,142,037 10 1,179 .011318109
A 38,496,206 0.9770 39,402,463 10 663 .008209545
A 35,619,194 0.9424 37,796,258 10 410 .023485088
A 33,985,089 0.9463 35,913,652 12 218 .032071203
D3 17,379,348 0.9972 17,428,147 15 1,131 .028523296
F1 5,713,791 1.0492 5,445,855 9 87 .018759122
F1 5,657,942 0.9282 6,095,607 8 30 .007511718
F1 6,230,621 0.9551 6,523,527 7 16 .014000094
F1 5,824,424 1.0119 5,755,928 3 4 .000357451
Random Totals: 189,958,709   198,503,474 84 3,738  
Catg J Exception Values: 13,534,427   13,742,292      
Catg D1 Exception Values: 16,538,097   14,845,478      
Total Test Values (4): 220,031,233   227,091,244      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,354,562

Confidence Interval Values (5)

State Lower Limit: 215,736,682 (State Test Value minus Margin of Error Percent)
Local Test Value: 220,031,233 (Within Confidence Interval)
State Upper Limit: 238,445,806 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 207,127,637 (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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