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2010 Confidence Interval Detail
118/Irion
118-902/Irion County ISD

Category Summary

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

Stratum
Variance
A 7,459,810 0.8788 8,488,632 10 178 .034463581
A 9,852,450 1.0069 9,784,934 9 126 .040200747
A 9,565,160 0.8872 10,781,289 9 78 .015622547
A 12,715,190 0.8035 15,824,754 9 67 .018453797
G1 120,160,441 1.0451 114,975,066 15 313 .048479162
G1 120,888,669 1.1256 107,399,315 14 74 .037341126
G1 122,266,451 1.0317 118,509,694 11 31 .005856155
G1 115,905,380 1.0052 115,305,790 7 10 .002341022
Random Totals: 518,813,551   501,069,474 84 877  
Catg J Exception Values: 4,819,950   4,404,037      
Catg D1 Exception Values: 15,949,580   24,357,318      
Total Test Values (4): 539,583,081   529,830,829      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 26,491,541

Confidence Interval Values (5)

State Lower Limit: 503,339,288 (State Test Value minus Margin of Error Percent)
Local Test Value: 539,583,081 (Within Confidence Interval)
State Upper Limit: 556,322,370 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 691,306,631 (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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