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2007 Confidence Interval Detail
227/Travis
246-914/Coupland ISD

Category Summary

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

Stratum
Variance
A 706,388 1.0297 686,013 3 4 .002516021
Random Totals: 706,388   686,013 3 4  
Catg J Exception Values: 205,231   203,452      
Catg D1 Exception Values: 396,558   343,346      
Catg D3 Exception Values: 6,773,280   6,077,601      
Total Test Values (4): 8,081,457   7,310,412      

Margin of Error

Margin of Error Percent: 5.0000055
Margin of Error Value: 365,521

Confidence Interval Values (5)

State Lower Limit: 6,944,891 (State Test Value minus Margin of Error Percent)
State Upper Limit: 7,675,933 (State Test Value plus Margin of Error Percent)
Local Test Value: 8,081,457 (Outside Confidence Interval)
Value Assigned (6): 3,242,199 (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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