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2008 Confidence Interval Detail
188/Potter
219-901/Happy ISD

Category Summary

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

Stratum
Variance
A 3,345,379 0.9487 3,526,277 10 47 .007616823
D3 5,611,978 0.8076 6,948,957 10 368 .187306817
Random Totals: 8,957,357   10,475,234 20 415  
Catg J Exception Values: 1,418,017   1,380,645      
Catg D1 Exception Values: 5,891,778   6,635,579      
Catg F1 Exception Values: 2,030,231   2,030,538      
Catg L1 Exception Values: 3,448,304   3,544,934      
Total Test Values (4): 21,745,687   24,066,930      

Margin of Error

Margin of Error Percent: 8.2189419
Margin of Error Value: 1,978,047

Confidence Interval Values (5)

Local Test Value: 21,745,687 (Outside Confidence Interval)
State Lower Limit: 22,088,883 (State Test Value minus Margin of Error Percent)
State Upper Limit: 26,044,977 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 20,865,595 (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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