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2008 Confidence Interval Detail
229/Tyler
229-905/Spurger ISD

Category Summary

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

Stratum
Variance
A 4,330,640 0.7419 5,837,229 10 203 .047369064
A 5,593,488 0.7692 7,271,825 16 139 .068853724
A 5,317,240 0.7677 6,926,195 15 88 .076984618
A 8,983,295 0.9515 9,441,193 25 87 .039239713
D3 15,978,485 0.9150 17,462,825 22 1,112 .063000006
G1 19,191,913 0.9810 19,563,622 13 22 .005848710
Random Totals: 59,395,061   66,502,889 101 1,651  
Catg D1 Exception Values: 9,530,330   9,495,437      
Catg G1 Exception Values: 8,571,946   9,113,086      
Total Test Values (4): 77,497,337   85,111,412      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 4,255,571

Confidence Interval Values (5)

Local Test Value: 77,497,337 (Outside Confidence Interval)
State Lower Limit: 80,855,841 (State Test Value minus Margin of Error Percent)
State Upper Limit: 89,366,983 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 72,619,704 (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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