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2008 Confidence Interval Detail
224/Throckmorton
224-902/Woodson ISD

Category Summary

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

Stratum
Variance
A 787,150 0.8995 875,097 11 51 .038683227
A 730,480 0.9697 753,305 10 28 .008058253
A 789,170 0.8618 915,723 9 21 .050758063
A 707,060 0.9114 775,795 9 12 .013326440
D3 3,889,420 0.6918 5,622,174 39 949 .186156690
G1 4,584,250 0.9437 4,857,741 13 42 .067139874
G1 4,633,880 1.0050 4,610,826 9 19 .010952551
G1 4,356,740 1.1503 3,787,482 6 9 .040582288
G1 4,438,580 1.0722 4,139,694 3 4 .005964524
Random Totals: 24,916,730   26,337,837 109 1,135  
Catg J Exception Values: 756,422   724,597      
Catg D1 Exception Values: 3,887,880   5,136,341      
Total Test Values (4): 29,561,032   32,198,775      

Margin of Error

Margin of Error Percent: 5.0000008
Margin of Error Value: 1,609,939

Confidence Interval Values (5)

Local Test Value: 29,561,032 (Outside Confidence Interval)
State Lower Limit: 30,588,836 (State Test Value minus Margin of Error Percent)
State Upper Limit: 33,808,714 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 32,873,547 (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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