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2007 Confidence Interval Detail
011/Bastrop
011-902/Elgin ISD

Category Summary

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

Stratum
Variance
A 112,741,598 0.9359 120,463,295 35 1,534 .027619361
A 112,660,816 0.9752 115,525,857 45 978 .015207777
A 112,683,574 1.0315 109,242,437 32 758 .013281268
A 112,538,493 0.9873 113,986,117 28 494 .009936731
D3 137,191,549 1.0073 136,197,309 48 3,710 .043518387
F1 14,942,618 0.9225 16,197,960 8 113 .113019302
F1 15,160,563 0.9399 16,129,974 6 47 .002737891
F1 15,512,607 0.9701 15,990,730 6 20 .011545058
F1 14,098,378 0.8542 16,504,774 3 6 .123037190
Random Totals: 647,530,196   660,238,453 211 7,660  
Catg D1 Exception Values: 8,282,060   8,976,337      
Total Test Values (4): 655,812,256   669,214,790      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 33,460,740

Confidence Interval Values (5)

State Lower Limit: 635,754,050 (State Test Value minus Margin of Error Percent)
Local Test Value: 655,812,256 (Within Confidence Interval)
State Upper Limit: 702,675,530 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 759,804,360 (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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