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2009 Confidence Interval Detail
140/Lamb
140-901/Amherst ISD

Category Summary

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

Stratum
Variance
A 1,539,380 0.9111 1,689,584 15 133 .004177806
A 1,876,380 0.9579 1,958,847 15 74 .002574554
A 1,645,310 0.9580 1,717,443 13 34 .001322480
A 1,730,580 0.9661 1,791,305 8 14 .000884126
D3 2,902,610 0.9714 2,988,069 23 627 .001015853
Random Totals: 9,694,260   10,145,248 74 882  
Catg J Exception Values: 3,315,590   3,070,388      
Catg D1 Exception Values: 21,157,901   19,339,152      
Total Test Values (4): 34,167,751   32,554,788      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,627,739

Confidence Interval Values (5)

State Lower Limit: 30,927,049 (State Test Value minus Margin of Error Percent)
Local Test Value: 34,167,751 (Within Confidence Interval)
State Upper Limit: 34,182,527 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 47,850,574 (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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