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2009 Confidence Interval Detail
050/Coryell
050-904/Oglesby ISD

Category Summary

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

Stratum
Variance
A 4,762,560 0.9671 4,924,579 7 126 .009406709
A 4,109,950 0.9657 4,255,928 6 67 .003610318
A 3,905,910 0.9655 4,045,479 6 41 .012364745
A 4,191,930 0.9632 4,352,087 5 25 .024406496
D3 13,499,040 1.0068 13,407,867 21 760 .025450731
L1 941,040 0.9884 952,084 7 30 .000738810
Random Totals: 31,410,430   31,938,024 52 1,049  
Catg J Exception Values: 1,339,740   1,327,481      
Catg D1 Exception Values: 4,216,622   4,385,812      
Catg L1 Exception Values: 731,830   723,900      
Total Test Values (4): 37,698,622   38,375,217      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 1,918,761

Confidence Interval Values (5)

State Lower Limit: 36,456,456 (State Test Value minus Margin of Error Percent)
Local Test Value: 37,698,622 (Within Confidence Interval)
State Upper Limit: 40,293,978 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 32,587,929 (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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