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2008 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 2,718,619 1.0719 2,536,262 7 111 .002738408
A 3,004,367 1.1037 2,722,087 7 68 .000234288
A 3,143,873 1.0634 2,956,435 8 47 .003196489
A 3,567,156 1.1024 3,235,809 6 28 .000188699
D3 9,470,757 0.9909 9,557,732 10 782 .000133420
F1 3,001,669 0.9620 3,120,238 10 51 .007074822
Random Totals: 24,906,441   24,128,563 48 1,087  
Catg J Exception Values: 14,048,513   14,027,775      
Catg D1 Exception Values: 14,743,215   17,877,596      
Total Test Values (4): 53,698,169   56,033,934      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 2,801,697

Confidence Interval Values (5)

State Lower Limit: 53,232,237 (State Test Value minus Margin of Error Percent)
Local Test Value: 53,698,169 (Within Confidence Interval)
State Upper Limit: 58,835,631 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 55,467,601 (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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