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2006 Confidence Interval Detail
152/Lubbock
152-908/Roosevelt ISD

Category Summary

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

Stratum
Variance
A 24,825,627 0.8734 28,424,121 15 558 .063225226
A 24,902,430 0.8606 28,936,126 14 268 .051943306
A 24,758,455 0.9649 25,659,089 14 171 .010527517
A 24,814,763 1.0236 24,242,637 13 107 .005517809
D3 16,340,844 0.9375 17,430,234 25 857 .023112128
G1 6,022,379 0.9672 6,226,612 6 26 .005754564
G1 6,382,447 0.9466 6,742,496 4 12 .012929267
G1 11,299,003 1.0152 11,129,830 2 3 .001256474
Random Totals: 139,345,948   148,791,145 93 2,002  
Catg D1 Exception Values: 14,448,827   8,972,435      
Catg G1 Exception Values: 12,047,063   12,278,022      
Total Test Values (4): 165,841,838   170,041,602      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,502,080

Confidence Interval Values (5)

State Lower Limit: 161,539,522 (State Test Value minus Margin of Error Percent)
Local Test Value: 165,841,838 (Within Confidence Interval)
State Upper Limit: 178,543,682 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 173,818,938 (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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