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2010 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 3,494,050 0.8977 3,892,225 13 140 .044891594
A 3,468,830 0.9819 3,532,773 11 73 .012283191
A 3,530,060 0.9249 3,816,694 10 51 .014584309
A 3,480,960 1.0346 3,364,547 9 29 .004777656
D3 16,996,960 1.1339 14,989,823 20 1,291 .087003658
Random Totals: 30,970,860   29,596,062 63 1,584  
Catg J Exception Values: 3,821,394   20,585,811      
Catg D1 Exception Values: 5,921,661   5,135,623      
Total Test Values (4): 40,713,915   55,317,496      

Margin of Error

Margin of Error Percent: 5.0000004
Margin of Error Value: 2,765,875

Confidence Interval Values (5)

Local Test Value: 40,713,915 (Outside Confidence Interval)
State Lower Limit: 52,551,621 (State Test Value minus Margin of Error Percent)
State Upper Limit: 58,083,371 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 167,944,024 (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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