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2008 Confidence Interval Detail
229/Tyler
229-904/Warren ISD

Category Summary

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

Stratum
Variance
A 26,578,907 0.6788 39,155,726 14 775 .053710594
A 26,463,731 0.7378 35,868,435 15 388 .027317170
A 21,587,307 0.8876 24,320,986 17 204 .023736400
A 26,014,640 1.1120 23,394,460 20 134 .040422817
D3 31,731,313 0.9059 35,027,390 41 2,474 .315690258
G1 10,894,221 0.9898 11,006,487 15 18 .002140810
Random Totals: 143,270,119   168,773,484 122 3,993  
Catg D1 Exception Values: 23,231,360   23,210,162      
Catg G1 Exception Values: 46,330,365   46,417,916      
Total Test Values (4): 212,831,844   238,401,562      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,920,078

Confidence Interval Values (5)

Local Test Value: 212,831,844 (Outside Confidence Interval)
State Lower Limit: 226,481,484 (State Test Value minus Margin of Error Percent)
State Upper Limit: 250,321,640 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 213,199,582 (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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