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2008 Confidence Interval Detail
246/Williamson
014-902/Bartlett ISD

Category Summary

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

Stratum
Variance
A 22,450,663 0.9527 23,565,302 12 385 .012795247
D3 5,688,580 0.9727 5,848,237 13 447 .002339037
F1 3,496,049 0.9972 3,505,865 11 66 .029213334
Random Totals: 31,635,292   32,919,404 36 898  
Catg J Exception Values: 2,216,668   2,218,231      
Catg D1 Exception Values: 4,839,523   4,226,965      
Total Test Values (4): 38,691,483   39,364,600      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,968,230

Confidence Interval Values (5)

State Lower Limit: 37,396,370 (State Test Value minus Margin of Error Percent)
Local Test Value: 38,691,483 (Within Confidence Interval)
State Upper Limit: 41,332,830 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 36,190,677 (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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