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2009 Confidence Interval Detail
049/Cooke
091-909/Whitesboro ISD

Category Summary

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

Stratum
Variance
A 4,865,576 1.2007 4,052,283 9 104 .139664786
A 4,889,105 0.9677 5,052,294 12 53 .005058802
A 5,739,449 1.1420 5,025,787 10 42 .038439381
A 4,377,626 1.0251 4,270,438 9 22 .003873956
D3 25,235,067 0.8789 28,712,103 20 635 .050224852
Random Totals: 45,106,823   47,112,905 60 856  
Catg D1 Exception Values: 1,572,347   1,459,501      
Total Test Values (4): 46,679,170   48,572,406      

Margin of Error

Margin of Error Percent: 6.2779760
Margin of Error Value: 3,049,364

Confidence Interval Values (5)

State Lower Limit: 45,523,042 (State Test Value minus Margin of Error Percent)
Local Test Value: 46,679,170 (Within Confidence Interval)
State Upper Limit: 51,621,770 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 48,405,300 (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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