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2009 Confidence Interval Detail
139/Lamar
139-912/Prairiland ISD

Category Summary

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

Stratum
Variance
A 15,600,980 0.8786 17,756,636 11 494 .049451201
A 15,106,410 0.8487 17,799,470 11 270 .073022426
A 15,788,440 0.8974 17,593,537 9 196 .039029544
A 14,698,300 0.9433 15,581,787 10 110 .005647118
D3 75,725,570 1.0200 74,240,755 20 4,129 .050033632
Random Totals: 136,919,700   142,972,185 61 5,199  
Catg J Exception Values: 11,927,846   11,797,782      
Catg D1 Exception Values: 12,330,781   10,526,890      
Total Test Values (4): 161,178,327   165,296,857      

Margin of Error

Margin of Error Percent: 5.2085098
Margin of Error Value: 8,609,503

Confidence Interval Values (5)

State Lower Limit: 156,687,354 (State Test Value minus Margin of Error Percent)
Local Test Value: 161,178,327 (Within Confidence Interval)
State Upper Limit: 173,906,360 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 149,826,867 (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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