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2009 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 2,259,960 0.9324 2,423,810 7 170 .010384224
A 2,155,050 1.0385 2,075,156 6 74 .003524719
A 2,308,930 1.0703 2,157,274 6 51 .022611651
A 2,173,920 1.1122 1,954,612 6 27 .002545595
D3 7,669,342 0.9486 8,084,906 10 1,803 .018587867
Random Totals: 16,567,202   16,695,758 35 2,125  
Catg D1 Exception Values: 36,988,910   37,932,828      
Total Test Values (4): 53,556,112   54,628,586      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,731,429

Confidence Interval Values (5)

State Lower Limit: 51,897,157 (State Test Value minus Margin of Error Percent)
Local Test Value: 53,556,112 (Within Confidence Interval)
State Upper Limit: 57,360,015 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 54,241,197 (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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