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2007 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 2,337,726 1.0444 2,238,344 15 79 .048587880
A 2,338,883 1.0408 2,247,197 15 44 .033060322
A 2,336,309 1.0956 2,132,447 14 28 .026016443
A 2,251,383 1.0881 2,069,096 9 14 .005442525
D3 8,009,251 1.0213 7,842,212 20 413 .025635710
F1 2,257,119 0.5348 4,220,492 13 37 .591580997
Random Totals: 19,530,671   20,749,788 86 615  
Catg J Exception Values: 1,973,725   1,977,727      
Catg D1 Exception Values: 2,041,046   1,661,793      
Total Test Values (4): 23,545,442   24,389,308      

Margin of Error

Margin of Error Percent: 6.4580840
Margin of Error Value: 1,575,082

Confidence Interval Values (5)

State Lower Limit: 22,814,226 (State Test Value minus Margin of Error Percent)
Local Test Value: 23,545,442 (Within Confidence Interval)
State Upper Limit: 25,964,390 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 45,813,897 (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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