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2011 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 2,673,837 0.8982 2,976,884 10 98 .043060633
A 2,756,816 0.9460 2,914,182 10 45 .035919620
A 2,559,768 0.9529 2,686,292 10 23 .007861208
A 2,676,206 1.0080 2,654,966 10 14 .004603332
D3 8,273,997 0.9540 8,672,953 16 733 .011742441
Random Totals: 18,940,624   19,905,277 56 913  
Catg D1 Exception Values: 6,294,483   5,900,662      
Total Test Values (4): 25,235,107   25,805,939      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 1,290,297

Confidence Interval Values (5)

State Lower Limit: 24,515,642 (State Test Value minus Margin of Error Percent)
Local Test Value: 25,235,107 (Within Confidence Interval)
State Upper Limit: 27,096,236 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 25,866,112 (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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