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2009 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 9,427,290 0.7626 12,362,038 7 216 .248345209
A 8,411,100 0.8550 9,837,544 7 102 .048596092
A 8,437,090 0.9319 9,053,643 7 69 .011054697
A 8,384,360 0.8609 9,739,064 6 46 .019386439
G1 109,449,828 0.9861 110,992,625 10 320 .016170516
G1 110,574,039 0.9965 110,962,407 6 77 .035675032
G1 108,136,208 1.0308 104,905,130 6 29 .003521278
G1 108,431,359 1.0547 102,807,774 4 10 .012978564
Random Totals: 471,251,274   470,660,225 53 869  
Catg J Exception Values: 4,153,816   3,686,781      
Catg D1 Exception Values: 15,100,710   21,584,931      
Total Test Values (4): 490,505,800   495,931,937      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 24,796,597

Confidence Interval Values (5)

State Lower Limit: 471,135,340 (State Test Value minus Margin of Error Percent)
Local Test Value: 490,505,800 (Within Confidence Interval)
State Upper Limit: 520,728,534 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 586,341,569 (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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