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2009 Confidence Interval Detail
049/Cooke
049-909/Sivells Bend ISD

Category Summary

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

Stratum
Variance
A 13,159,649 1.0004 13,154,387 9 119 .014698025
A 13,592,110 0.9824 13,835,617 7 64 .008880818
A 12,207,205 1.0645 11,467,548 7 43 .001946391
A 17,310,059 0.9937 17,419,804 7 39 .006475933
D3 10,493,318 1.0200 10,287,567 11 605 .030263138
G1 4,560,460 1.0559 4,319,026 6 12 .004607823
Random Totals: 71,322,801   70,483,949 47 882  
Catg D1 Exception Values: 3,591,070   3,422,162      
Catg G1 Exception Values: 25,413,368   24,612,678      
Total Test Values (4): 100,327,239   98,518,789      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,925,939

Confidence Interval Values (5)

State Lower Limit: 93,592,850 (State Test Value minus Margin of Error Percent)
Local Test Value: 100,327,239 (Within Confidence Interval)
State Upper Limit: 103,444,728 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 104,775,067 (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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