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2009 Confidence Interval Detail
039/Clay
039-901/Byers ISD

Category Summary

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

Stratum
Variance
A 3,143,960 0.9844 3,193,783 15 91 .009412729
A 2,597,840 0.9954 2,609,845 15 43 .008111815
A 3,205,370 0.9197 3,485,234 14 38 .009724622
A 3,329,860 1.0035 3,318,246 11 25 .009471381
D3 5,018,400 1.0176 4,931,604 20 487 .055143126
Random Totals: 17,295,430   17,538,712 75 684  
Catg J Exception Values: 973,580   1,100,181      
Catg D1 Exception Values: 4,608,430   4,775,568      
Total Test Values (4): 22,877,440   23,414,461      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,170,723

Confidence Interval Values (5)

State Lower Limit: 22,243,738 (State Test Value minus Margin of Error Percent)
Local Test Value: 22,877,440 (Within Confidence Interval)
State Upper Limit: 24,585,184 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 21,821,130 (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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