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2009 Confidence Interval Detail
036/Chambers
036-903/East Chambers ISD

Category Summary

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

Stratum
Variance
A 32,795,970 0.9868 33,234,668 7 631 .011269733
A 29,398,110 0.9121 32,231,236 7 317 .023704676
A 28,822,280 0.9811 29,377,515 7 219 .002801162
A 25,715,780 1.0104 25,451,089 7 129 .007323951
D3 30,350,220 1.0761 28,203,903 10 2,159 .018712323
F1 6,955,260 1.0269 6,773,065 6 76 .002818952
F1 8,950,210 0.9908 9,033,317 6 29 .013528562
F1 7,444,850 0.9878 7,536,799 4 8 .017609859
F1 8,356,400 1.0744 7,777,736 2 4 .059909921
G1 28,871,404 1.3545 21,315,175 14 38 .809522070
Random Totals: 207,660,484   200,934,503 70 3,610  
Catg J Exception Values: 5,395,050   5,759,926      
Catg D1 Exception Values: 7,205,480   8,702,988      
Total Test Values (4): 220,261,014   215,397,417      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 10,769,871

Confidence Interval Values (5)

State Lower Limit: 204,627,546 (State Test Value minus Margin of Error Percent)
Local Test Value: 220,261,014 (Within Confidence Interval)
State Upper Limit: 226,167,288 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 236,107,559 (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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