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2007 Confidence Interval Detail
050/Coryell
050-904/Oglesby ISD

Category Summary

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

Stratum
Variance
A 4,113,644 0.9377 4,386,951 7 115 .004226045
A 4,103,477 0.9919 4,136,987 6 73 .003278842
A 4,163,018 1.0111 4,117,316 6 48 .012047487
A 3,981,629 0.9955 3,999,627 6 27 .008127980
D3 12,547,688 0.9896 12,679,555 20 779 .018585889
Random Totals: 28,909,456   29,320,436 45 1,042  
Catg J Exception Values: 1,516,010   1,501,758      
Catg D1 Exception Values: 4,293,584   4,179,580      
Total Test Values (4): 34,719,050   35,001,774      

Margin of Error

Margin of Error Percent: 5.0000009
Margin of Error Value: 1,750,089

Confidence Interval Values (5)

State Lower Limit: 33,251,685 (State Test Value minus Margin of Error Percent)
Local Test Value: 34,719,050 (Within Confidence Interval)
State Upper Limit: 36,751,863 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 31,998,514 (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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