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2007 Confidence Interval Detail
074/Fannin
074-912/Trenton ISD

Category Summary

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

Stratum
Variance
A 13,272,777 0.8155 16,275,631 14 274 .029312182
A 13,369,200 0.8775 15,235,556 14 135 .027053626
A 13,257,551 0.9733 13,621,238 14 88 .027839758
A 13,166,922 0.9635 13,665,721 16 65 .010009427
D3 49,622,192 1.0251 48,407,172 21 1,503 .064500871
L1 1,926,608 0.9226 2,088,238 6 40 .014565251
L1 2,100,720 1.0681 1,966,782 4 7 .018134023
Random Totals: 106,715,970   111,260,338 89 2,112  
Catg D1 Exception Values: 2,790,329   2,418,663      
Catg L1 Exception Values: 3,105,880   3,135,079      
Total Test Values (4): 112,612,179   116,814,080      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,840,704

Confidence Interval Values (5)

State Lower Limit: 110,973,376 (State Test Value minus Margin of Error Percent)
Local Test Value: 112,612,179 (Within Confidence Interval)
State Upper Limit: 122,654,784 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 116,704,900 (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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