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2007 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 2,812,669 1.0240 2,746,747 8 115 .025780792
A 2,769,711 0.9506 2,913,645 6 64 .000280050
A 2,790,360 0.9585 2,911,174 8 40 .000144022
A 2,779,884 0.9769 2,845,618 5 19 .000154834
D3 10,256,717 0.9777 10,490,659 10 743 .000020810
F1 694,494 0.9519 729,587 6 20 .000467460
F1 742,816 0.9574 775,868 4 9 .000226900
F1 834,367 0.9686 861,415 3 4 .000019490
Random Totals: 23,681,018   24,274,713 50 1,014  
Catg J Exception Values: 13,015,818   13,013,403      
Catg D1 Exception Values: 13,271,226   16,527,193      
Catg F1 Exception Values: 261,418   279,853      
Total Test Values (4): 50,229,480   54,095,162      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,704,758

Confidence Interval Values (5)

Local Test Value: 50,229,480 (Outside Confidence Interval)
State Lower Limit: 51,390,404 (State Test Value minus Margin of Error Percent)
State Upper Limit: 56,799,920 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 52,463,150 (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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