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2009 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 5,638,195 0.8990 6,271,630 15 216 .039215554
A 6,606,827 0.9272 7,125,568 17 137 .021655043
A 7,061,754 0.9422 7,494,963 16 98 .021303748
A 8,076,775 0.9135 8,841,571 16 65 .020131443
D3 17,164,849 1.0817 15,868,401 20 1,021 .048392364
G1 10,658,864 1.0348 10,300,410 5 25 .003843211
Random Totals: 55,207,264   55,902,543 89 1,562  
Catg D1 Exception Values: 10,626,763   10,356,751      
Catg G1 Exception Values: 13,372,599   13,446,978      
Total Test Values (4): 79,206,626   79,706,272      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 3,985,314

Confidence Interval Values (5)

State Lower Limit: 75,720,958 (State Test Value minus Margin of Error Percent)
Local Test Value: 79,206,626 (Within Confidence Interval)
State Upper Limit: 83,691,586 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 65,593,905 (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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