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2009 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 47,485,638 1.0346 45,897,582 30 1,010 .092910863
A 48,074,970 1.0552 45,560,055 18 571 .046959068
A 46,830,060 1.0339 45,294,574 18 391 .026454240
A 56,321,320 0.9627 58,503,501 16 264 .026903284
D3 104,322,252 0.9933 105,025,926 37 4,106 .076309038
F1 7,386,980 0.9507 7,770,043 11 96 .031566965
F1 8,854,032 0.8809 10,051,120 7 46 .101713903
F1 8,720,515 0.6691 13,033,201 6 20 .075309879
F1 10,222,538 0.8680 11,777,118 5 8 .058856807
G1 20,409,290 1.0877 18,763,712 6 64 .014342762
G1 21,072,139 1.0816 19,482,377 6 19 .005701639
G1 21,612,430 1.0246 21,093,529 3 6 .017484030
Random Totals: 401,312,164   402,252,738 163 6,601  
Catg D1 Exception Values: 10,787,413   7,576,510      
Catg G1 Exception Values: 18,381,382   18,205,546      
Total Test Values (4): 430,480,959   428,034,794      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 21,401,740

Confidence Interval Values (5)

State Lower Limit: 406,633,054 (State Test Value minus Margin of Error Percent)
Local Test Value: 430,480,959 (Within Confidence Interval)
State Upper Limit: 449,436,534 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 414,003,012 (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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