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2009 Confidence Interval Detail
206/San Saba
206-902/Richland Springs ISD

Category Summary

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

Stratum
Variance
A 1,171,910 0.9379 1,249,504 6 74 .020835192
A 1,043,620 0.9403 1,109,880 6 39 .008858519
A 1,151,160 0.9578 1,201,879 6 28 .030351612
A 1,077,060 0.9210 1,169,446 5 16 .009215175
D3 28,417,660 0.9346 30,406,227 20 2,374 .041450655
Random Totals: 32,861,410   35,136,936 43 2,531  
Catg J Exception Values: 1,318,400   1,263,331      
Catg D1 Exception Values: 17,439,340   17,136,712      
Total Test Values (4): 51,619,150   53,536,979      

Margin of Error

Margin of Error Percent: 5.2203020
Margin of Error Value: 2,794,792

Confidence Interval Values (5)

State Lower Limit: 50,742,187 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,619,150 (Within Confidence Interval)
State Upper Limit: 56,331,771 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 51,978,079 (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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