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2010 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 209,771,850 0.9862 212,707,209 11 6,671 .001984940
A 237,072,340 1.0071 235,400,993 12 4,312 .001945762
A 212,961,130 0.9945 214,138,894 11 2,504 .000648516
A 224,535,610 1.0462 214,620,159 18 1,369 .011074791
F1 104,166,240 1.0461 99,575,796 10 414 .034561631
F1 106,058,680 1.0345 102,521,682 8 60 .043348760
F1 111,280,820 1.0019 111,069,787 7 21 .021721457
F1 102,736,570 1.0264 100,094,086 2 4 .002636341
L1 60,038,910 1.1214 53,539,246 12 477 .095939141
L1 61,867,910 0.8691 71,186,181 9 68 .059192417
L1 65,385,780 0.9607 68,060,560 7 19 .005210927
L1 40,581,850 0.9790 41,452,349 4 4 .001178198
Random Totals: 1,536,457,690   1,524,366,942 111 15,923  
Catg J Exception Values: 63,900,545   72,363,346      
Catg D1 Exception Values: 263,530   215,178      
Total Test Values (4): 1,600,621,765   1,596,945,466      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 79,847,273

Confidence Interval Values (5)

State Lower Limit: 1,517,098,193 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,600,621,765 (Within Confidence Interval)
State Upper Limit: 1,676,792,739 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 4,380,560,381 (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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