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2008 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 23,926,193 0.9277 25,790,873 12 545 .231247212
A 25,325,773 0.9327 27,153,182 15 271 .026166164
A 27,597,755 0.9975 27,666,922 13 193 .017362253
A 31,750,479 1.0177 31,198,270 12 134 .003036994
D3 16,152,843 0.8723 18,517,532 12 884 .021688565
G1 10,478,216 0.9038 11,593,512 6 20 .043954192
G1 13,090,585 0.9533 13,731,863 3 5 .012135419
Random Totals: 148,321,844   155,652,154 73 2,052  
Catg D1 Exception Values: 20,597,073   15,623,549      
Catg G1 Exception Values: 29,511,005   25,265,694      
Total Test Values (4): 198,429,922   196,541,397      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 9,827,070

Confidence Interval Values (5)

State Lower Limit: 186,714,327 (State Test Value minus Margin of Error Percent)
Local Test Value: 198,429,922 (Within Confidence Interval)
State Upper Limit: 206,368,467 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 210,020,802 (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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