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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 15,869,763 0.8723 18,193,010 12 1,164 .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: 148,038,764   155,327,632 73 2,332  
Catg D1 Exception Values: 20,863,694   14,964,723      
Catg G1 Exception Values: 29,511,005   25,265,694      
Total Test Values (4): 198,413,463   195,558,049      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 9,777,902

Confidence Interval Values (5)

State Lower Limit: 185,780,147 (State Test Value minus Margin of Error Percent)
Local Test Value: 198,413,463 (Within Confidence Interval)
State Upper Limit: 205,335,951 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 208,500,864 (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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