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2008 Confidence Interval Detail
140/Lamb
140-907/Springlake-Earth ISD

Category Summary

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

Stratum
Variance
A 3,114,061 0.9828 3,168,560 17 204 .016002228
A 3,125,420 0.9403 3,323,854 15 98 .004334102
A 3,130,330 1.0122 3,092,600 15 59 .015484513
A 3,553,320 1.0016 3,547,644 13 37 .021519452
D3 5,975,192 1.0508 5,686,327 25 774 .010420417
Random Totals: 18,898,323   18,818,985 85 1,172  
Catg J Exception Values: 1,946,100   1,948,961      
Catg D1 Exception Values: 22,065,429   20,086,129      
Total Test Values (4): 42,909,852   40,854,075      

Margin of Error

Margin of Error Percent: 5.0000006
Margin of Error Value: 2,042,704

Confidence Interval Values (5)

State Lower Limit: 38,811,371 (State Test Value minus Margin of Error Percent)
State Upper Limit: 42,896,779 (State Test Value plus Margin of Error Percent)
Local Test Value: 42,909,852 (Outside Confidence Interval)
Value Assigned (6): 47,406,882 (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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