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2011 Confidence Interval Detail
081/Freestone
081-905/Wortham ISD

Category Summary

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

Stratum
Variance
A 6,175,040 0.9444 6,538,585 10 165 .005748252
A 5,282,330 1.0240 5,158,525 10 87 .001397791
A 5,856,570 1.0268 5,703,711 10 69 .000818616
A 5,890,520 0.9910 5,944,016 10 39 .001759216
D3 25,225,430 1.0088 25,005,383 15 1,388 .007213625
Random Totals: 48,429,890   48,350,220 55 1,748  
Catg J Exception Values: 9,217,869   11,409,698      
Catg D1 Exception Values: 3,294,070   2,820,872      
Total Test Values (4): 60,941,829   62,580,790      

Margin of Error

Margin of Error Percent: 5.0000008
Margin of Error Value: 3,129,040

Confidence Interval Values (5)

State Lower Limit: 59,451,750 (State Test Value minus Margin of Error Percent)
Local Test Value: 60,941,829 (Within Confidence Interval)
State Upper Limit: 65,709,830 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 123,189,956 (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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