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2009 Confidence Interval Detail
038/Childress
044-902/Wellington ISD

Category Summary

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

Stratum
Variance
D3 1,601,080 0.9782 1,636,761 25 400 .014650661
Random Totals: 1,601,080   1,636,761 25 400  
Catg D1 Exception Values: 8,762,470   9,269,198      
Total Test Values (4): 10,363,550   10,905,959      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 545,298

Confidence Interval Values (5)

State Lower Limit: 10,360,661 (State Test Value minus Margin of Error Percent)
Local Test Value: 10,363,550 (Within Confidence Interval)
State Upper Limit: 11,451,257 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 11,653,730 (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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