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2007 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 18,285,989 0.8579 21,314,826 12 340 .056078991
A 18,326,664 0.9019 20,320,062 12 199 .048602326
A 18,312,148 0.8410 21,774,254 12 145 .151711423
A 18,115,572 1.0749 16,853,263 11 89 .038832035
D3 16,643,890 0.8786 18,943,649 20 844 .073536831
F1 2,592,374 0.8254 3,140,749 6 47 .048409159
F1 2,488,781 0.9312 2,672,660 5 13 .011280795
F1 2,471,387 0.8679 2,847,548 3 4 .008551826
G1 3,014,206 0.9993 3,016,317 4 5 .007142406
L1 11,615,311 0.9751 11,911,918 6 79 .000882957
L1 11,893,387 0.9690 12,273,877 5 12 .012220062
L1 13,158,644 0.9518 13,825,009 2 4 .004181942
Random Totals: 136,918,353   148,894,132 98 1,781  
Catg D1 Exception Values: 25,526,710   16,793,025      
Catg F1 Exception Values: 2,333,130   2,231,372      
Catg G1 Exception Values: 9,461,878   9,545,976      
Catg L1 Exception Values: 17,528,635   17,727,086      
Total Test Values (4): 191,768,706   195,191,591      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 9,759,580

Confidence Interval Values (5)

State Lower Limit: 185,432,011 (State Test Value minus Margin of Error Percent)
Local Test Value: 191,768,706 (Within Confidence Interval)
State Upper Limit: 204,951,171 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 182,188,167 (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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