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2006 Confidence Interval Detail
139/Lamar
139-908/Roxton ISD

Category Summary

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

Stratum
Variance
A 2,855,797 0.9596 2,976,029 13 135 .049692599
A 2,883,645 0.9540 3,022,689 12 76 .031620323
A 2,824,349 0.9846 2,868,524 11 51 .026137347
A 2,825,045 1.0204 2,768,566 11 34 .010009553
D3 9,932,200 0.8252 12,036,112 21 1,150 .108589871
Random Totals: 21,321,036   23,671,920 68 1,446  
Catg J Exception Values: 3,471,542   4,001,122      
Catg D1 Exception Values: 6,431,481   6,849,731      
Total Test Values (4): 31,224,059   34,522,773      

Margin of Error

Margin of Error Percent: 5.1888792
Margin of Error Value: 1,791,345

Confidence Interval Values (5)

Local Test Value: 31,224,059 (Outside Confidence Interval)
State Lower Limit: 32,731,428 (State Test Value minus Margin of Error Percent)
State Upper Limit: 36,314,118 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 29,416,608 (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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