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2009 Confidence Interval Detail
018/Bosque
018-907/Kopperl ISD

Category Summary

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

Stratum
Variance
A 10,387,810 0.9880 10,513,978 9 280 .009244511
A 10,652,550 1.0025 10,625,985 9 155 .012017086
A 10,481,840 0.9971 10,512,326 9 103 .005248289
A 10,947,400 0.9629 11,369,197 8 68 .025307131
D3 39,157,390 1.0213 38,340,732 31 993 .016273656
Random Totals: 81,626,990   81,362,218 66 1,599  
Catg J Exception Values: 4,492,070   4,586,619      
Catg D1 Exception Values: 4,170,420   3,814,080      
Total Test Values (4): 90,289,480   89,762,917      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 4,488,146

Confidence Interval Values (5)

State Lower Limit: 85,274,771 (State Test Value minus Margin of Error Percent)
Local Test Value: 90,289,480 (Within Confidence Interval)
State Upper Limit: 94,251,063 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 102,448,475 (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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