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2006 Confidence Interval Detail
228/Trinity
228-905/Apple Springs ISD

Category Summary

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

Stratum
Variance
A 1,566,382 0.9906 1,581,246 8 92 .000423291
A 1,569,838 0.9369 1,675,566 7 57 .001784679
A 1,576,302 0.9683 1,627,907 7 38 .002987814
A 1,516,142 0.9615 1,576,851 5 20 .002972727
D3 9,958,343 0.5820 17,110,555 10 1,375 .236906905
Random Totals: 16,187,007   23,572,125 37 1,582  
Catg J Exception Values: 1,225,240   1,284,154      
Catg D1 Exception Values: 10,915,019   1,575,805      
Total Test Values (4): 28,327,266   26,432,084      

Margin of Error

Margin of Error Percent: 20.2067495
Margin of Error Value: 5,341,065

Confidence Interval Values (5)

State Lower Limit: 21,091,019 (State Test Value minus Margin of Error Percent)
Local Test Value: 28,327,266 (Within Confidence Interval)
State Upper Limit: 31,773,149 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 25,031,118 (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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