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2009 Confidence Interval Detail
072/Erath
072-908/Huckabay ISD

Category Summary

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

Stratum
Variance
A 1,532,260 0.9448 1,621,782 6 38 .008678852
A 1,802,070 1.0121 1,780,526 5 24 .009392821
A 2,051,260 1.0528 1,948,385 5 17 .003720559
A 1,703,450 1.0945 1,556,373 3 7 .003961497
D3 64,592,810 0.9577 67,445,766 33 1,874 .075006666
G1 2,599,550 0.9537 2,725,752 8 36 .108294595
G1 2,600,530 0.9451 2,751,592 7 18 .032079266
G1 2,686,960 1.0427 2,576,925 4 12 .015761022
G1 2,393,720 1.2263 1,951,986 3 4 .067939120
Random Totals: 81,962,610   84,359,087 74 2,030  
Catg J Exception Values: 4,003,235   4,259,536      
Catg D1 Exception Values: 8,923,460   8,111,578      
Total Test Values (4): 94,889,305   96,730,201      

Margin of Error

Margin of Error Percent: 6.6219629
Margin of Error Value: 6,405,438

Confidence Interval Values (5)

State Lower Limit: 90,324,763 (State Test Value minus Margin of Error Percent)
Local Test Value: 94,889,305 (Within Confidence Interval)
State Upper Limit: 103,135,639 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 115,731,370 (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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