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2008 Confidence Interval Detail
073/Falls
073-904/Westphalia ISD

Category Summary

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

Stratum
Variance
A 530,260 0.7286 727,779 15 21 .092959609
A 1,230,850 0.7955 1,547,266 14 26 .050294938
A 565,310 0.8858 638,191 7 8 .033593668
A 1,189,570 0.9570 1,243,020 6 12 .030325667
D3 5,793,360 0.8289 6,989,215 30 444 .081239660
Random Totals: 9,309,350   11,145,471 72 511  
Catg J Exception Values: 395,680   451,612      
Catg D1 Exception Values: 2,203,970   2,246,727      
Total Test Values (4): 11,909,000   13,843,810      

Margin of Error

Margin of Error Percent: 5.2437226
Margin of Error Value: 725,931

Confidence Interval Values (5)

Local Test Value: 11,909,000 (Outside Confidence Interval)
State Lower Limit: 13,117,879 (State Test Value minus Margin of Error Percent)
State Upper Limit: 14,569,741 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 15,575,366 (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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