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2008 Confidence Interval Detail
049/Cooke
049-909/Sivells Bend ISD

Category Summary

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

Stratum
Variance
A 11,508,446 0.9011 12,771,553 16 109 .034360870
A 10,289,586 0.9337 11,020,227 16 54 .005865006
A 14,096,993 0.9012 15,642,469 15 55 .008296107
A 18,260,382 0.9651 18,920,715 12 47 .016291882
D3 9,397,110 1.0189 9,222,799 25 593 .025748569
G1 6,308,780 1.0623 5,938,793 10 12 .014580264
Random Totals: 69,861,297   73,516,556 94 870  
Catg D1 Exception Values: 3,433,078   3,480,650      
Catg G1 Exception Values: 32,642,485   33,150,223      
Total Test Values (4): 105,936,860   110,147,429      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 5,507,371

Confidence Interval Values (5)

State Lower Limit: 104,640,058 (State Test Value minus Margin of Error Percent)
Local Test Value: 105,936,860 (Within Confidence Interval)
State Upper Limit: 115,654,800 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 108,908,653 (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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