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2008 Confidence Interval Detail
187/Polk
229-906/Chester ISD

Category Summary

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

Stratum
Variance
A 10,589,476 0.7722 13,713,385 12 236 .028030005
D3 7,838,175 0.9602 8,163,065 11 733 .022800217
Random Totals: 18,427,651   21,876,450 23 969  
Catg J Exception Values: 1,133,035   1,113,072      
Catg D1 Exception Values: 6,912,004   7,538,060      
Total Test Values (4): 26,472,690   30,527,582      

Margin of Error

Margin of Error Percent: 5.0542654
Margin of Error Value: 1,542,945

Confidence Interval Values (5)

Local Test Value: 26,472,690 (Outside Confidence Interval)
State Lower Limit: 28,984,637 (State Test Value minus Margin of Error Percent)
State Upper Limit: 32,070,527 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 25,506,584 (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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