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2006 Confidence Interval Detail
139/Lamar
139-911/North Lamar ISD

Category Summary

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

Stratum
Variance
A 71,650,285 0.9491 75,492,872 30 1,403 .020870914
A 71,587,512 0.9132 78,391,932 31 873 .011086982
A 71,665,912 0.9474 75,644,830 38 592 .003729994
A 71,509,439 0.9706 73,675,499 29 328 .002830649
D3 144,416,070 0.7629 189,298,820 28 6,197 .136607647
F1 17,858,937 0.8126 21,977,525 7 164 .088874781
F1 17,709,513 0.9591 18,464,720 6 46 .034697034
F1 23,855,238 1.0601 22,502,819 5 14 .010257615
L1 11,996,772 1.1484 10,446,510 7 247 .133853156
L1 11,736,104 1.0259 11,439,813 6 45 .004914719
L1 14,901,856 0.9919 15,023,547 4 12 .046525650
Random Totals: 528,887,638   592,358,887 191 9,921  
Catg D1 Exception Values: 19,808,141   18,968,903      
Catg F1 Exception Values: 11,085,700   11,057,753      
Catg L1 Exception Values: 3,656,470   3,698,181      
Total Test Values (4): 563,437,949   626,083,724      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 31,304,186

Confidence Interval Values (5)

Local Test Value: 563,437,949 (Outside Confidence Interval)
State Lower Limit: 594,779,538 (State Test Value minus Margin of Error Percent)
State Upper Limit: 657,387,910 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 688,698,806 (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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