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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 137,246,660 0.8488 161,694,934 28 7,504 .111587227
A 137,218,111 0.9133 150,244,291 19 4,164 .130879496
A 137,282,861 0.8877 154,650,063 24 2,524 .021730231
A 137,171,942 0.8962 153,059,520 17 1,262 .026538973
F1 60,817,127 0.9682 62,814,632 7 477 .001249110
F1 61,544,235 0.9862 62,405,430 6 67 .000403313
F1 62,577,375 0.9770 64,050,537 5 15 .001870733
L1 39,784,523 1.0238 38,859,663 8 580 .004744787
L1 40,449,936 0.9757 41,457,350 7 102 .002316969
L1 41,573,667 0.9771 42,548,017 8 27 .002949214
L1 36,998,249 0.9820 37,676,425 4 5 .000539423
Random Totals: 892,664,686   969,460,862 133 16,727  
Catg J Exception Values: 51,307,269   57,347,445      
Catg D1 Exception Values: 409,130   244,056      
Catg F1 Exception Values: 51,195,460   51,611,717      
Total Test Values (4): 995,576,545   1,078,664,080      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 53,933,204

Confidence Interval Values (5)

Local Test Value: 995,576,545 (Outside Confidence Interval)
State Lower Limit: 1,024,730,876 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,132,597,284 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,689,276,888 (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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