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2008 Confidence Interval Detail
225/Titus
225-905/Winfield ISD

Category Summary

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

Stratum
Variance
A 2,613,490 1.0890 2,399,899 14 86 .052191294
A 2,074,127 1.0019 2,070,194 15 37 .039339005
A 2,372,829 0.9238 2,568,553 11 26 .033789814
A 1,102,410 0.8769 1,257,167 8 8 .005633188
D3 7,439,698 0.9673 7,691,200 33 438 .255008297
F1 1,913,525 0.6422 2,979,640 23 37 .122111948
Random Totals: 17,516,079   18,966,653 104 632  
Catg J Exception Values: 2,062,306   2,098,264      
Catg D1 Exception Values: 2,077,429   1,764,357      
Total Test Values (4): 21,655,814   22,829,274      

Margin of Error

Margin of Error Percent: 6.0044003
Margin of Error Value: 1,370,761

Confidence Interval Values (5)

State Lower Limit: 21,458,513 (State Test Value minus Margin of Error Percent)
Local Test Value: 21,655,814 (Within Confidence Interval)
State Upper Limit: 24,200,035 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 39,648,348 (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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