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2008 Confidence Interval Detail
247/Wilson
247-903/La Vernia ISD

Category Summary

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

Stratum
Variance
A 98,907,085 0.8116 121,866,788 32 1,276 .065577887
A 113,195,260 0.8190 138,211,551 26 728 .006932829
A 109,042,635 0.8778 124,222,642 43 529 .008260782
A 112,835,655 0.9211 122,500,983 39 417 .009131935
D3 66,309,419 0.6948 95,436,700 18 1,947 .046665973
Random Totals: 500,290,054   602,238,664 158 4,897  
Catg D1 Exception Values: 4,375,460   3,692,603      
Total Test Values (4): 504,665,514   605,931,267      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 30,296,563

Confidence Interval Values (5)

Local Test Value: 504,665,514 (Outside Confidence Interval)
State Lower Limit: 575,634,704 (State Test Value minus Margin of Error Percent)
State Upper Limit: 636,227,830 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 623,772,589 (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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