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2010 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 102,637,827 1.0060 102,025,673 26 1,446 .014757251
A 95,207,418 0.9786 97,289,411 18 890 .011505818
A 93,255,557 1.0069 92,616,503 18 638 .009759864
A 101,431,736 1.0371 97,803,236 14 406 .009024018
D3 139,284,410 0.9381 148,475,013 20 2,998 .014179827
F1 19,340,724 0.9480 20,401,608 10 124 .051763260
F1 17,903,354 0.9178 19,506,814 8 38 .031139963
F1 15,414,310 0.9731 15,840,417 6 15 .000562680
F1 16,744,716 0.9478 17,666,930 4 6 .002349475
Random Totals: 601,220,052   611,625,605 124 6,561  
Catg J Exception Values: 14,187,725   15,984,030      
Catg D1 Exception Values: 4,449,740   4,351,084      
Total Test Values (4): 619,857,517   631,960,719      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 31,598,036

Confidence Interval Values (5)

State Lower Limit: 600,362,683 (State Test Value minus Margin of Error Percent)
Local Test Value: 619,857,517 (Within Confidence Interval)
State Upper Limit: 663,558,755 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 693,559,201 (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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