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2006 Confidence Interval Detail
023/Briscoe
023-902/Silverton ISD

Category Summary

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

Stratum
Variance
A 9,148,323 1.0083 9,073,017 24 431 .181517336
D3 6,392,230 0.9998 6,393,509 25 1,747 .073120235
Random Totals: 15,540,553   15,466,526 49 2,178  
Catg D1 Exception Values: 33,254,550   26,942,218      
Total Test Values (4): 48,795,103   42,408,744      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,120,437

Confidence Interval Values (5)

State Lower Limit: 40,288,307 (State Test Value minus Margin of Error Percent)
State Upper Limit: 44,529,181 (State Test Value plus Margin of Error Percent)
Local Test Value: 48,795,103 (Outside Confidence Interval)
Value Assigned (6): 49,441,191 (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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