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2011 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 2,059,535 0.9518 2,163,832 10 163 .013740968
A 2,208,995 0.9354 2,361,551 10 78 .019420973
A 2,289,209 0.9070 2,523,935 10 52 .004436045
A 2,224,250 0.9808 2,267,792 10 29 .032053334
D3 8,293,045 0.9793 8,468,340 15 1,802 .002183805
Random Totals: 17,075,034   17,785,450 55 2,124  
Catg D1 Exception Values: 45,173,260   42,784,869      
Total Test Values (4): 62,248,294   60,570,319      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 3,028,516

Confidence Interval Values (5)

State Lower Limit: 57,541,803 (State Test Value minus Margin of Error Percent)
Local Test Value: 62,248,294 (Within Confidence Interval)
State Upper Limit: 63,598,835 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 63,178,041 (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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