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2007 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 2,968,318 0.9685 3,064,861 15 136 .038464981
A 2,953,127 0.9781 3,019,249 14 75 .046907214
A 2,976,446 0.9605 3,098,851 14 51 .033861784
A 2,907,565 0.9802 2,966,298 11 33 .006475541
D3 9,862,950 0.9253 10,659,192 20 1,257 .031291017
Random Totals: 21,668,406   22,808,451 74 1,552  
Catg J Exception Values: 3,693,593   3,704,848      
Catg D1 Exception Values: 6,403,737   6,667,738      
Total Test Values (4): 31,765,736   33,181,037      

Margin of Error

Margin of Error Percent: 5.0000005
Margin of Error Value: 1,659,052

Confidence Interval Values (5)

State Lower Limit: 31,521,985 (State Test Value minus Margin of Error Percent)
Local Test Value: 31,765,736 (Within Confidence Interval)
State Upper Limit: 34,840,089 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 30,465,152 (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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