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2009 Confidence Interval Detail
178/Nueces
178-905/Driscoll ISD

Category Summary

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

Stratum
Variance
A 3,184,695 0.9463 3,365,418 9 131 .009470898
A 4,498,759 0.8631 5,212,326 8 118 .003121933
A 5,482,876 0.9319 5,883,545 8 92 .027281848
A 4,786,028 0.8767 5,459,140 8 44 .042635503
D3 1,581,378 0.9661 1,636,868 11 299 .006231808
G1 11,688,570 1.0469 11,164,935 14 62 .026810009
G1 11,722,509 1.0618 11,040,223 8 27 .019651328
G1 11,293,467 1.1373 9,930,069 5 14 .080934936
G1 11,417,566 1.0770 10,601,268 4 8 .007610213
Random Totals: 65,655,848   64,293,792 75 795  
Catg J Exception Values: 5,335,898   5,168,185      
Catg D1 Exception Values: 9,934,587   10,481,642      
Total Test Values (4): 80,926,333   79,943,619      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 3,997,181

Confidence Interval Values (5)

State Lower Limit: 75,946,438 (State Test Value minus Margin of Error Percent)
Local Test Value: 80,926,333 (Within Confidence Interval)
State Upper Limit: 83,940,800 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 134,858,643 (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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