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2006 Confidence Interval Detail
250/Wood
250-904/Quitman ISD

Category Summary

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

Stratum
Variance
A 44,159,037 1.0761 41,036,183 15 823 .053248901
A 44,055,718 1.1007 40,025,182 18 487 .009094603
A 44,182,144 1.0125 43,636,685 23 355 .022680271
A 43,989,905 1.0030 43,858,330 15 222 .001315892
D3 96,438,267 1.0550 91,410,680 32 4,093 .075330298
F1 7,388,393 0.9538 7,746,271 7 96 .006562255
F1 7,229,447 0.7575 9,543,824 6 39 .014754639
F1 7,492,412 1.2382 6,051,052 5 16 .539162360
F1 7,079,171 0.6493 10,902,774 3 6 .003915700
G1 24,379,420 1.2758 19,109,124 6 65 .113946123
G1 24,023,789 1.0805 22,233,956 5 18 .016153121
G1 26,305,740 0.9546 27,556,820 3 5 .017325335
Random Totals: 376,723,443   363,110,881 138 6,225  
Catg D1 Exception Values: 11,994,500   7,625,420      
Catg G1 Exception Values: 19,872,022   18,708,624      
Total Test Values (4): 408,589,965   389,444,925      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 19,472,246

Confidence Interval Values (5)

State Lower Limit: 369,972,679 (State Test Value minus Margin of Error Percent)
Local Test Value: 408,589,965 (Within Confidence Interval)
State Upper Limit: 408,917,171 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 385,204,381 (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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