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2008 Confidence Interval Detail
081/Freestone
081-905/Wortham ISD

Category Summary

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

Stratum
Variance
A 3,204,560 0.9806 3,267,958 15 122 .032880194
A 4,372,150 0.9951 4,393,679 13 102 .024650184
A 6,451,410 0.9671 6,670,882 20 102 .014849549
A 8,563,850 1.0045 8,525,485 20 76 .026831970
D3 18,164,600 0.9309 19,512,944 21 1,359 .057064661
Random Totals: 40,756,570   42,370,948 89 1,761  
Catg J Exception Values: 40,033,456   39,351,589      
Catg D1 Exception Values: 3,754,620   2,949,655      
Total Test Values (4): 84,544,646   84,672,192      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 4,233,610

Confidence Interval Values (5)

State Lower Limit: 80,438,582 (State Test Value minus Margin of Error Percent)
Local Test Value: 84,544,646 (Within Confidence Interval)
State Upper Limit: 88,905,802 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 113,181,603 (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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