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2009 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 4,871,770 0.9866 4,937,938 15 140 .003262288
A 5,791,920 0.9677 5,985,243 16 101 .002058900
A 5,998,140 0.9640 6,222,137 16 76 .001475522
A 9,079,690 0.9873 9,196,485 23 69 .004525979
D3 22,276,430 0.9639 23,110,727 21 1,372 .002699254
Random Totals: 48,017,950   49,452,530 91 1,758  
Catg J Exception Values: 34,162,610   38,236,085      
Catg D1 Exception Values: 3,760,460   2,869,464      
Total Test Values (4): 85,941,020   90,558,079      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 4,527,904

Confidence Interval Values (5)

Local Test Value: 85,941,020 (Outside Confidence Interval)
State Lower Limit: 86,030,175 (State Test Value minus Margin of Error Percent)
State Upper Limit: 95,085,983 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 127,646,548 (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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