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2008 Confidence Interval Detail
212/Smith
212-904/Troup ISD

Category Summary

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

Stratum
Variance
A 47,940,200 0.9978 48,045,901 21 923 .073692095
D3 25,855,520 0.6772 38,180,035 10 1,055 .189193291
L1 11,949,802 0.8909 13,413,180 10 144 .021973256
Random Totals: 85,745,522   99,639,116 41 2,122  
Catg D1 Exception Values: 3,945,118   2,762,168      
Total Test Values (4): 89,690,640   102,401,284      

Margin of Error

Margin of Error Percent: 11.7706473
Margin of Error Value: 12,053,294

Confidence Interval Values (5)

Local Test Value: 89,690,640 (Outside Confidence Interval)
State Lower Limit: 90,347,990 (State Test Value minus Margin of Error Percent)
State Upper Limit: 114,454,578 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 327,713,929 (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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