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2006 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 15,239,556 0.8962 17,004,637 10 323 .043173782
A 15,178,620 0.9605 15,802,832 8 187 .016439054
A 15,165,981 0.9135 16,602,059 8 138 .027716227
A 15,189,469 0.9249 16,422,823 11 89 .021274600
D3 16,986,714 0.8726 19,466,782 29 856 .102359363
F1 2,513,491 0.9344 2,689,952 6 45 .017497505
F1 2,520,092 0.9641 2,613,932 5 14 .001548748
F1 4,561,690 0.9588 4,757,708 3 6 .005139344
L1 6,764,492 1.0313 6,559,189 6 73 .005522104
L1 7,270,666 0.9839 7,389,639 5 16 .003063525
L1 5,929,385 1.0567 5,611,228 3 5 .010439364
Random Totals: 107,320,156   114,920,781 94 1,752  
Catg D1 Exception Values: 18,235,054   10,809,201      
Catg G1 Exception Values: 10,607,472   10,586,504      
Catg L1 Exception Values: 11,829,295   12,788,932      
Total Test Values (4): 147,991,977   149,105,418      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 7,455,271

Confidence Interval Values (5)

State Lower Limit: 141,650,147 (State Test Value minus Margin of Error Percent)
Local Test Value: 147,991,977 (Within Confidence Interval)
State Upper Limit: 156,560,689 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 150,518,144 (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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