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2008 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 12,331,680 0.8696 14,180,865 13 265 .033755552
A 12,026,690 1.0605 11,340,585 13 129 .006020772
A 15,370,810 1.0225 15,032,577 12 109 .005297113
A 21,336,930 1.0579 20,169,137 15 115 .005211272
D3 48,082,770 0.9390 51,206,358 20 1,349 .066660207
L1 953,480 0.9898 963,306 6 28 .004300617
L1 1,761,820 1.0788 1,633,129 4 7 .022092185
Random Totals: 111,864,180   114,525,957 83 2,002  
Catg J Exception Values: 3,650,690   3,787,677      
Catg D1 Exception Values: 2,441,390   1,873,703      
Catg L1 Exception Values: 4,702,467   4,686,358      
Total Test Values (4): 122,658,727   124,873,695      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 6,243,685

Confidence Interval Values (5)

State Lower Limit: 118,630,010 (State Test Value minus Margin of Error Percent)
Local Test Value: 122,658,727 (Within Confidence Interval)
State Upper Limit: 131,117,380 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 124,401,452 (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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