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2009 Confidence Interval Detail
123/Jefferson
123-908/Port Neches-Groves ISD

Category Summary

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

Stratum
Variance
A 253,650,270 0.9640 263,122,687 34 3,343 .001276322
A 260,950,000 0.9638 270,751,193 35 2,283 .002084722
A 274,531,650 0.9842 278,938,884 34 1,668 .001003845
A 271,644,380 0.9950 273,009,427 26 1,001 .001540962
F1 18,581,690 0.9940 18,693,853 7 199 .004916044
F1 19,324,530 0.9789 19,741,067 6 84 .028452063
F1 20,160,880 1.0370 19,441,543 6 33 .001812729
F1 16,525,770 1.1162 14,805,384 4 9 .013012708
Random Totals: 1,135,369,170   1,158,504,038 152 8,620  
Catg D1 Exception Values: 120,000   87,847      
Total Test Values (4): 1,135,489,170   1,158,591,885      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,929,594

Confidence Interval Values (5)

State Lower Limit: 1,100,662,291 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,135,489,170 (Within Confidence Interval)
State Upper Limit: 1,216,521,479 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 2,837,066,942 (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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