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2009 Confidence Interval Detail
248/Winkler
248-902/Wink-Loving ISD

Category Summary

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

Stratum
Variance
A 2,421,295 0.6895 3,511,668 7 143 .050468989
A 2,449,500 0.6899 3,550,515 6 76 .094338968
A 2,666,800 0.8476 3,146,295 6 58 .051157697
A 2,805,570 0.8846 3,171,569 6 35 .017491433
G1 75,633,528 1.0315 73,323,827 6 86 .028689564
G1 74,802,011 1.0246 73,006,062 6 31 .005564322
G1 74,539,000 1.0178 73,235,410 5 17 .002466565
G1 73,993,655 0.9761 75,805,404 4 9 .001296082
Random Totals: 309,311,359   308,750,750 46 455  
Catg J Exception Values: 15,273,670   15,429,459      
Catg D1 Exception Values: 632,509   2,347,692      
Catg G1 Exception Values: 112,077,503   103,921,085      
Total Test Values (4): 437,295,041   430,448,986      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 21,522,449

Confidence Interval Values (5)

State Lower Limit: 408,926,537 (State Test Value minus Margin of Error Percent)
Local Test Value: 437,295,041 (Within Confidence Interval)
State Upper Limit: 451,971,435 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 526,135,569 (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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