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2007 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 77,691,277 0.8629 90,035,087 12 1,363 .028723058
A 77,568,555 0.9568 81,070,814 26 840 .017005679
A 77,594,572 0.9452 82,093,284 34 564 .008960843
A 77,551,370 0.9514 81,512,897 19 316 .011962166
D3 159,877,470 0.9513 168,062,094 24 7,622 .017998341
F1 18,482,324 0.9973 18,532,361 7 158 .029240552
F1 18,179,337 0.9171 19,822,633 6 45 .021174790
F1 24,739,007 0.8772 28,202,242 5 14 .039357253
L1 14,466,098 0.9842 14,698,332 7 222 .003722636
L1 14,616,390 0.9323 15,677,775 6 38 .008359496
L1 14,567,485 1.0801 13,487,163 4 9 .042447604
Random Totals: 575,333,885   613,194,682 150 11,191  
Catg D1 Exception Values: 20,096,025   18,788,895      
Catg F1 Exception Values: 11,085,700   11,136,274      
Catg L1 Exception Values: 17,669,230   17,574,304      
Total Test Values (4): 624,184,840   660,694,155      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 33,034,708

Confidence Interval Values (5)

Local Test Value: 624,184,840 (Outside Confidence Interval)
State Lower Limit: 627,659,447 (State Test Value minus Margin of Error Percent)
State Upper Limit: 693,728,863 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 749,466,972 (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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