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2008 Confidence Interval Detail
210/Shelby
210-905/Timpson ISD

Category Summary

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

Stratum
Variance
A 7,836,993 0.7550 10,380,123 11 289 .191789669
A 7,423,163 1.0621 6,989,138 10 148 .016335500
A 6,923,151 1.0219 6,774,783 10 90 .023834572
A 7,971,091 1.0758 7,409,454 9 59 .002859290
D3 41,813,950 0.9887 42,291,848 41 3,061 .031535177
G1 16,641,630 1.0180 16,347,377 6 30 .013363874
G1 16,797,290 1.0062 16,693,789 5 13 .009361865
G1 16,810,640 0.9711 17,310,926 4 9 .006209669
G1 15,939,700 1.0259 15,537,284 2 3 .000154779
Random Totals: 138,157,608   139,734,722 98 3,702  
Catg J Exception Values: 5,959,114   5,815,010      
Catg D1 Exception Values: 13,873,400   14,364,572      
Total Test Values (4): 157,990,122   159,914,304      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 7,995,715

Confidence Interval Values (5)

State Lower Limit: 151,918,589 (State Test Value minus Margin of Error Percent)
Local Test Value: 157,990,122 (Within Confidence Interval)
State Upper Limit: 167,910,019 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 177,901,092 (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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