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2009 Confidence Interval Detail
049/Cooke
049-908/Walnut Bend ISD

Category Summary

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

Stratum
Variance
D3 3,102,233 0.8776 3,534,905 18 164 .034790658
G1 6,373,600 0.9480 6,723,207 15 31 .035194297
Random Totals: 9,475,833   10,258,112 33 195  
Catg D1 Exception Values: 795,702   776,708      
Catg G1 Exception Values: 14,581,890   13,120,538      
Total Test Values (4): 24,853,425   24,155,358      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 1,207,768

Confidence Interval Values (5)

State Lower Limit: 22,947,590 (State Test Value minus Margin of Error Percent)
Local Test Value: 24,853,425 (Within Confidence Interval)
State Upper Limit: 25,363,126 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 27,710,511 (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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