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2009 Confidence Interval Detail
022/Brewster
022-902/Marathon ISD

Category Summary

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

Stratum
Variance
A 3,124,361 0.9981 3,130,309 8 115 .002638128
A 3,039,130 0.9718 3,127,320 7 64 .000655694
A 3,338,752 0.9721 3,434,577 6 45 .000938324
A 3,360,423 0.9712 3,460,073 6 24 .001278507
D3 13,019,277 0.9813 13,267,377 11 800 .000253233
F1 731,238 0.9726 751,838 6 19 .003860634
F1 596,167 1.0193 584,879 4 7 .011312384
F1 1,481,122 0.9690 1,528,506 4 6 .000495841
Random Totals: 28,690,470   29,284,879 52 1,080  
Catg J Exception Values: 15,572,931   16,196,600      
Catg D1 Exception Values: 15,011,039   19,158,890      
Total Test Values (4): 59,274,440   64,640,369      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,232,018

Confidence Interval Values (5)

Local Test Value: 59,274,440 (Outside Confidence Interval)
State Lower Limit: 61,408,351 (State Test Value minus Margin of Error Percent)
State Upper Limit: 67,872,387 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 60,943,503 (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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