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2009 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 7,424,340 0.9133 8,129,136 7 283 .026777221
A 7,808,050 0.9041 8,636,268 7 159 .004052598
A 7,135,690 0.9348 7,633,387 7 93 .011356837
A 7,994,280 0.8444 9,467,409 8 57 .006161810
D3 44,847,983 0.9091 49,332,288 25 3,044 .065758029
G1 15,355,710 1.1719 13,103,260 6 30 .034788576
G1 14,822,560 1.1885 12,471,653 5 15 .029599977
G1 15,701,999 1.0528 14,914,513 5 9 .001063798
Random Totals: 121,090,612   123,687,914 70 3,690  
Catg J Exception Values: 6,141,030   6,126,266      
Catg D1 Exception Values: 15,003,917   15,612,968      
Catg G1 Exception Values: 13,446,429   13,482,086      
Total Test Values (4): 155,681,988   158,909,234      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 7,945,462

Confidence Interval Values (5)

State Lower Limit: 150,963,772 (State Test Value minus Margin of Error Percent)
Local Test Value: 155,681,988 (Within Confidence Interval)
State Upper Limit: 166,854,696 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 193,633,098 (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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