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2007 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 2,755,711 1.0409 2,647,431 8 85 .006025402
A 2,799,307 1.0587 2,644,098 7 46 .004392571
A 2,742,565 1.0289 2,665,531 9 33 .012137214
A 2,702,033 0.9875 2,736,236 7 22 .004863624
D3 4,845,990 0.9815 4,937,331 13 490 .003351280
Random Totals: 15,845,606   15,630,627 44 676  
Catg J Exception Values: 1,103,821   1,141,235      
Catg D1 Exception Values: 4,301,300   4,347,385      
Total Test Values (4): 21,250,727   21,119,247      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,055,962

Confidence Interval Values (5)

State Lower Limit: 20,063,285 (State Test Value minus Margin of Error Percent)
Local Test Value: 21,250,727 (Within Confidence Interval)
State Upper Limit: 22,175,209 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 20,587,958 (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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