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2009 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 3,536,690 0.9568 3,696,373 7 143 .032446338
A 3,472,830 1.1435 3,037,018 7 73 .052780001
A 3,680,900 0.8761 4,201,461 7 53 .032879746
A 3,315,500 1.0243 3,236,845 6 27 .003337647
D3 14,785,430 1.1236 13,158,980 20 1,287 .041341092
Random Totals: 28,791,350   27,330,677 47 1,583  
Catg J Exception Values: 16,669,823   18,008,254      
Catg D1 Exception Values: 6,251,221   5,848,672      
Total Test Values (4): 51,712,394   51,187,603      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,559,380

Confidence Interval Values (5)

State Lower Limit: 48,628,223 (State Test Value minus Margin of Error Percent)
Local Test Value: 51,712,394 (Within Confidence Interval)
State Upper Limit: 53,746,983 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 59,174,115 (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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