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2008 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 1,482,145 0.8605 1,722,423 11 61 .082446705
A 2,373,915 0.8809 2,694,875 14 61 .094288129
A 3,460,530 0.8237 4,201,202 22 58 .054047735
A 3,514,135 0.9964 3,526,832 22 30 .057434842
D3 8,142,778 0.8560 9,512,591 24 787 .026179497
Random Totals: 18,973,503   21,657,923 93 997  
Catg J Exception Values: 2,351,347   1,717,134      
Catg D1 Exception Values: 10,505,300   10,445,500      
Total Test Values (4): 31,830,150   33,820,557      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 1,691,028

Confidence Interval Values (5)

Local Test Value: 31,830,150 (Outside Confidence Interval)
State Lower Limit: 32,129,529 (State Test Value minus Margin of Error Percent)
State Upper Limit: 35,511,585 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 46,294,772 (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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