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2008 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 200,220,790 0.9871 202,837,392 55 2,992 .007222556
A 280,996,220 0.9925 283,119,617 50 2,760 .006779416
A 268,291,940 0.9798 273,823,168 50 1,769 .001256597
A 309,570,030 0.9855 314,124,840 49 1,211 .002679188
F1 15,227,790 0.8854 17,198,769 10 190 .017236397
F1 17,475,100 0.9056 19,296,709 11 94 .091257828
F1 19,679,700 0.9721 20,244,522 9 47 .027081574
F1 23,336,660 0.8666 26,928,987 7 15 .082819127
Random Totals: 1,134,798,230   1,157,574,004 241 9,078  
Catg D1 Exception Values: 123,610   79,794      
Total Test Values (4): 1,134,921,840   1,157,653,798      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 57,882,690

Confidence Interval Values (5)

State Lower Limit: 1,099,771,108 (State Test Value minus Margin of Error Percent)
Local Test Value: 1,134,921,840 (Within Confidence Interval)
State Upper Limit: 1,215,536,488 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 3,359,019,179 (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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