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2009 Confidence Interval Detail
229/Tyler
229-904/Warren ISD

Category Summary

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

Stratum
Variance
A 25,061,424 0.9559 26,217,621 14 720 .042756528
A 26,316,000 0.9229 28,514,465 17 399 .010345424
A 28,984,565 0.8717 33,250,619 15 278 .027786061
A 29,150,649 0.9741 29,925,725 21 149 .013695211
D3 32,047,933 1.0437 30,706,077 20 2,312 .040376184
G1 7,184,519 1.0567 6,799,015 5 14 .000637806
G1 7,856,075 1.0787 7,282,910 2 4 .002065317
Random Totals: 156,601,165   162,696,432 94 3,876  
Catg D1 Exception Values: 26,332,547   25,761,292      
Catg G1 Exception Values: 34,729,613   35,299,408      
Total Test Values (4): 217,663,325   223,757,132      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 11,187,857

Confidence Interval Values (5)

State Lower Limit: 212,569,275 (State Test Value minus Margin of Error Percent)
Local Test Value: 217,663,325 (Within Confidence Interval)
State Upper Limit: 234,944,989 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 192,466,290 (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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