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2007 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 4,416,552 0.9896 4,462,967 10 177 .004771715
A 4,400,126 0.8555 5,143,338 8 101 .101474984
A 4,416,356 0.9253 4,772,891 10 71 .016267854
A 4,362,216 1.0747 4,059,008 11 38 .017284968
D3 20,768,350 0.9787 21,220,343 14 1,838 .015412877
G1 2,626,970 0.8498 3,091,280 8 38 .216725967
Random Totals: 40,990,570   42,749,827 61 2,263  
Catg J Exception Values: 13,676,926   13,051,558      
Catg D1 Exception Values: 5,209,770   4,401,745      
Catg G1 Exception Values: 2,424,830   2,395,018      
Total Test Values (4): 62,302,096   62,598,148      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 3,129,907

Confidence Interval Values (5)

State Lower Limit: 59,468,241 (State Test Value minus Margin of Error Percent)
Local Test Value: 62,302,096 (Within Confidence Interval)
State Upper Limit: 65,728,055 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 121,885,891 (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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