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2009 Confidence Interval Detail
145/Leon
145-902/Centerville ISD

Category Summary

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

Stratum
Variance
A 7,308,840 1.0031 7,286,253 9 255 .075438523
A 7,172,200 0.8362 8,577,135 9 130 .021955508
A 7,877,530 0.9078 8,677,605 8 89 .009748128
A 7,280,590 0.7993 9,108,708 8 51 .026938707
D3 123,502,820 0.9669 127,730,706 21 5,614 .075431196
G1 15,695,510 1.0385 15,113,635 14 41 .003984882
G1 16,320,430 0.9709 16,809,589 8 11 .009737473
Random Totals: 185,157,920   193,303,631 77 6,191  
Catg J Exception Values: 5,138,650   5,034,298      
Catg D1 Exception Values: 13,093,310   10,633,364      
Catg G1 Exception Values: 28,915,586   28,312,720      
Total Test Values (4): 232,305,466   237,284,013      

Margin of Error

Margin of Error Percent: 6.4653724
Margin of Error Value: 15,341,295

Confidence Interval Values (5)

State Lower Limit: 221,942,718 (State Test Value minus Margin of Error Percent)
Local Test Value: 232,305,466 (Within Confidence Interval)
State Upper Limit: 252,625,308 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 272,708,412 (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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