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2009 Confidence Interval Detail
025/Brown
025-904/Blanket ISD

Category Summary

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

Stratum
Variance
A 1,788,170 0.9167 1,950,660 8 83 .055835940
A 1,981,140 1.0383 1,908,061 10 47 .025626967
A 1,797,130 0.9086 1,977,911 8 29 .014688247
A 1,620,120 0.9051 1,789,990 7 15 .026740280
D3 21,255,720 0.8510 24,977,344 37 983 .300514326
Random Totals: 28,442,280   32,603,966 70 1,157  
Catg J Exception Values: 2,476,760   2,418,908      
Catg D1 Exception Values: 3,158,262   3,210,575      
Total Test Values (4): 34,077,302   38,233,449      

Margin of Error

Margin of Error Percent: 11.5735857
Margin of Error Value: 4,424,981

Confidence Interval Values (5)

State Lower Limit: 33,808,468 (State Test Value minus Margin of Error Percent)
Local Test Value: 34,077,302 (Within Confidence Interval)
State Upper Limit: 42,658,430 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 30,416,815 (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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