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2009 Confidence Interval Detail
229/Tyler
229-906/Chester ISD

Category Summary

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

Stratum
Variance
A 2,266,507 0.9209 2,461,187 15 73 .016290285
A 2,900,852 0.9177 3,161,003 18 59 .020767071
A 3,046,159 0.8813 3,456,438 16 43 .025476843
A 3,155,847 0.9666 3,264,894 15 24 .014150538
D3 9,138,184 1.0231 8,931,858 20 750 .005389682
Random Totals: 20,507,549   21,275,380 84 949  
Catg J Exception Values: 2,401,530   1,658,119      
Catg D1 Exception Values: 11,738,126   11,421,151      
Catg G1 Exception Values: 1,057,201   1,042,475      
Total Test Values (4): 35,704,406   35,397,125      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,769,856

Confidence Interval Values (5)

State Lower Limit: 33,627,269 (State Test Value minus Margin of Error Percent)
Local Test Value: 35,704,406 (Within Confidence Interval)
State Upper Limit: 37,166,981 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 34,742,558 (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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