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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 0.9125 4,745,907 8 203 .053573297
A 5,593,488 0.8889 6,292,595 15 139 .042989103
A 5,317,240 0.8694 6,115,988 15 88 .053646204
A 8,983,295 0.9935 9,042,068 24 87 .032695862
D3 15,703,400 0.9058 17,336,498 23 1,079 .073478757
G1 19,191,913 1.0088 19,024,497 13 22 .002018110
Random Totals: 59,119,976   62,557,553 98 1,618  
Catg D1 Exception Values: 9,545,790   9,511,893      
Catg G1 Exception Values: 8,571,946   9,113,086      
Total Test Values (4): 77,237,712   81,182,532      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 4,059,127

Confidence Interval Values (5)

State Lower Limit: 77,123,405 (State Test Value minus Margin of Error Percent)
Local Test Value: 77,237,712 (Within Confidence Interval)
State Upper Limit: 85,241,659 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 71,241,560 (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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