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2007 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 25,918,116 0.8998 28,804,308 14 584 .128456265
A 25,878,827 0.9050 28,595,389 21 275 .036841030
A 25,811,274 0.9814 26,300,463 14 172 .010793551
A 25,815,533 0.9756 26,461,186 12 108 .011545956
D3 14,905,972 0.9871 15,100,772 15 860 .020425444
G1 8,437,435 0.9518 8,864,714 5 20 .000791073
G1 7,576,384 1.0404 7,282,184 2 3 .002658661
Random Totals: 134,343,541   141,409,016 83 2,022  
Catg D1 Exception Values: 19,816,491   13,461,026      
Catg G1 Exception Values: 26,216,966   24,844,000      
Total Test Values (4): 180,376,998   179,714,042      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 8,985,702

Confidence Interval Values (5)

State Lower Limit: 170,728,340 (State Test Value minus Margin of Error Percent)
Local Test Value: 180,376,998 (Within Confidence Interval)
State Upper Limit: 188,699,744 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 190,150,818 (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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