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2008 Confidence Interval Detail
152/Lubbock
152-910/Idalou ISD

Category Summary

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

Stratum
Variance
A 20,059,691 0.9221 21,754,355 15 389 .049896495
A 19,515,777 0.9269 21,054,889 15 210 .020868791
A 19,799,753 0.8836 22,408,050 15 153 .054831028
A 21,069,636 0.9979 21,113,975 16 95 .031928770
D3 18,222,821 0.9477 19,228,470 21 1,195 .114861035
F1 2,223,408 0.9243 2,405,505 6 45 .005519682
F1 2,673,905 0.9531 2,805,482 5 16 .013873837
F1 3,101,732 0.9725 3,189,442 3 7 .002609567
G1 4,041,432 0.9941 4,065,418 3 5 .000063647
L1 10,889,570 0.9240 11,785,249 6 50 .027543680
L1 13,475,627 1.0403 12,953,597 4 8 .012288211
L1 13,336,043 1.0037 13,286,882 2 3 .000038948
Random Totals: 148,409,395   156,051,314 111 2,176  
Catg D1 Exception Values: 28,377,693   19,868,110      
Catg F1 Exception Values: 2,394,033   2,237,035      
Catg G1 Exception Values: 12,690,638   12,403,699      
Catg L1 Exception Values: 7,189,000   7,189,000      
Total Test Values (4): 199,060,759   197,749,158      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 9,887,458

Confidence Interval Values (5)

State Lower Limit: 187,861,700 (State Test Value minus Margin of Error Percent)
Local Test Value: 199,060,759 (Within Confidence Interval)
State Upper Limit: 207,636,616 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 197,693,969 (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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