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2008 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 7,388,660 0.8850 8,348,768 11 197 .014456664
A 7,758,150 0.8639 8,980,380 10 110 .014283990
A 9,132,730 0.9552 9,561,066 12 83 .005804725
A 11,175,800 0.9576 11,670,635 9 66 .006471125
D3 12,520,510 0.7839 15,972,076 25 2,341 .130628235
G1 122,017,630 1.0153 120,178,893 18 319 .009079275
G1 122,711,910 1.0184 120,494,806 15 75 .012336566
G1 120,690,121 1.0242 117,838,431 15 23 .007267785
G1 119,852,547 1.0340 115,911,554 6 7 .001977530
Random Totals: 533,248,058   528,956,609 121 3,221  
Catg J Exception Values: 4,708,240   4,555,806      
Catg D1 Exception Values: 15,758,080   18,815,083      
Total Test Values (4): 553,714,378   552,327,498      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 27,616,375

Confidence Interval Values (5)

State Lower Limit: 524,711,123 (State Test Value minus Margin of Error Percent)
Local Test Value: 553,714,378 (Within Confidence Interval)
State Upper Limit: 579,943,873 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 646,809,572 (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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