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2006 Confidence Interval Detail
123/Jefferson
123-907/Port Arthur ISD

Category Summary

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

Stratum
Variance
A 137,280,486 0.9218 148,926,542 28 7,504 .095800061
A 137,251,930 0.9359 146,652,345 19 4,164 .132904135
A 137,316,697 0.9334 147,114,524 24 2,524 .018606907
A 137,205,749 0.9735 140,940,677 17 1,262 .014779846
F1 60,888,579 0.9682 62,888,431 7 477 .001249110
F1 61,616,542 0.9862 62,478,749 6 67 .000403313
F1 62,650,896 0.9770 64,125,789 5 15 .001870733
L1 39,790,842 1.0238 38,865,835 8 580 .004744787
L1 40,456,360 0.9757 41,463,934 7 102 .002316969
L1 41,580,270 0.9771 42,554,774 8 27 .002949214
L1 37,004,126 0.9820 37,682,409 4 5 .000539423
Random Totals: 893,042,477   933,694,009 133 16,727  
Catg J Exception Values: 51,307,269   51,271,710      
Catg D1 Exception Values: 409,130   244,056      
Catg F1 Exception Values: 51,195,460   51,611,717      
Total Test Values (4): 995,954,336   1,036,821,492      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 51,841,075

Confidence Interval Values (5)

State Lower Limit: 984,980,417 (State Test Value minus Margin of Error Percent)
Local Test Value: 995,954,336 (Within Confidence Interval)
State Upper Limit: 1,088,662,567 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,687,355,646 (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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