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2009 Confidence Interval Detail
212/Smith
212-904/Troup ISD

Category Summary

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

Stratum
Variance
A 10,201,167 0.9064 11,254,597 7 294 .128256609
A 10,920,069 0.9158 11,924,076 7 179 .036634578
A 12,272,347 0.9152 13,409,470 7 140 .010235384
A 10,676,337 0.9562 11,165,381 7 68 .002976397
D3 32,128,030 0.8997 35,709,714 20 1,498 .036518622
G1 40,189,150 0.9500 42,304,368 13 137 .016084515
G1 40,113,403 1.0051 39,909,863 7 74 .011312211
G1 39,698,811 1.0237 38,779,731 6 47 .005368209
G1 39,732,126 1.0067 39,467,692 6 27 .001660704
Random Totals: 235,931,440   243,924,892 80 2,464  
Catg D1 Exception Values: 3,109,029   3,091,915      
Total Test Values (4): 239,040,469   247,016,807      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,350,840

Confidence Interval Values (5)

State Lower Limit: 234,665,967 (State Test Value minus Margin of Error Percent)
Local Test Value: 239,040,469 (Within Confidence Interval)
State Upper Limit: 259,367,647 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 284,373,355 (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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