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2008 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 65,845,552 0.9743 67,582,420 17 1,234 .011446155
A 88,678,060 0.9675 91,656,910 19 1,033 .020499877
A 98,424,460 0.9783 100,607,646 29 765 .006623705
A 97,830,529 1.0027 97,567,098 17 423 .002278120
D3 188,535,112 0.9773 192,914,266 26 7,659 .057130829
F1 20,573,290 0.9660 21,297,402 7 178 .010180548
F1 18,854,700 0.9270 20,339,482 7 52 .044515218
F1 23,770,930 0.9192 25,860,455 5 20 .026322245
L1 15,419,490 1.0446 14,761,143 7 224 .013114836
L1 15,642,600 0.9980 15,673,948 7 29 .001000851
L1 9,250,210 0.9187 10,068,804 3 4 .017989403
Random Totals: 642,824,933   658,329,574 144 11,621  
Catg D1 Exception Values: 19,943,546   17,607,008      
Catg F1 Exception Values: 18,609,910   17,989,982      
Catg L1 Exception Values: 8,752,090   8,757,086      
Total Test Values (4): 690,130,479   702,683,650      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 35,134,183

Confidence Interval Values (5)

State Lower Limit: 667,549,467 (State Test Value minus Margin of Error Percent)
Local Test Value: 690,130,479 (Within Confidence Interval)
State Upper Limit: 737,817,833 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 804,340,482 (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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