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2008 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 45,774,118 0.8939 51,207,202 24 1,000 .104368197
A 44,498,680 0.9303 47,832,613 18 541 .036091134
A 46,921,470 0.9487 49,458,701 16 404 .030333006
A 50,382,140 0.9114 55,279,943 14 248 .043441058
D3 102,733,769 0.8662 118,602,827 26 4,112 .029237779
F1 8,149,710 0.9363 8,704,165 7 103 .008331027
F1 7,769,980 0.9283 8,370,117 7 40 .017134633
F1 7,851,940 0.9367 8,382,556 5 17 .030233268
F1 8,404,140 0.9335 9,002,828 3 7 .001019130
G1 29,455,340 1.0964 26,865,505 7 69 .010842721
G1 29,522,450 1.1812 24,993,608 6 18 .071789974
G1 32,705,470 1.0942 29,889,846 3 6 .006050379
Random Totals: 414,169,207   438,589,911 136 6,565  
Catg D1 Exception Values: 11,101,483   7,315,384      
Catg G1 Exception Values: 22,851,980   22,608,822      
Total Test Values (4): 448,122,670   468,514,117      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 23,425,706

Confidence Interval Values (5)

State Lower Limit: 445,088,411 (State Test Value minus Margin of Error Percent)
Local Test Value: 448,122,670 (Within Confidence Interval)
State Upper Limit: 491,939,823 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 438,379,175 (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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