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2008 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 5,213,070 0.7237 7,203,358 7 219 .147424361
A 6,310,730 0.7213 8,749,106 7 144 .051354264
A 6,268,810 0.7722 8,118,117 6 90 .008164568
A 11,758,060 0.7782 15,109,304 7 98 .016832561
D3 121,930,960 0.8514 143,212,309 54 5,578 .111086141
G1 15,743,670 0.9704 16,223,897 6 39 .060961200
G1 15,933,280 0.8414 18,936,629 4 12 .100529748
Random Totals: 183,158,580   217,552,720 91 6,180  
Catg J Exception Values: 5,350,313   5,543,535      
Catg D1 Exception Values: 13,087,470   12,492,067      
Catg G1 Exception Values: 49,956,828   49,634,082      
Total Test Values (4): 251,553,191   285,222,404      

Margin of Error

Margin of Error Percent: 5.0299296
Margin of Error Value: 14,346,486

Confidence Interval Values (5)

Local Test Value: 251,553,191 (Outside Confidence Interval)
State Lower Limit: 270,875,918 (State Test Value minus Margin of Error Percent)
State Upper Limit: 299,568,890 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 282,662,580 (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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