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2006 Confidence Interval Detail
198/Robertson
198-902/Calvert ISD

Category Summary

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

Stratum
Variance
A 4,345,552 1.0144 4,283,864 17 247 .045170716
A 4,327,657 1.1486 3,767,767 17 120 .075297945
A 4,338,365 0.8658 5,010,817 15 71 .010140838
A 4,288,366 0.9329 4,596,812 16 37 .018684559
D3 8,724,900 0.9848 8,859,565 26 991 .050099353
F1 734,710 0.9176 800,687 6 44 .014590437
F1 706,204 0.9084 777,415 5 13 .064852961
F1 733,541 1.0343 709,215 3 6 .020451943
Random Totals: 28,199,295   28,806,142 105 1,529  
Catg J Exception Values: 10,954,070   11,153,139      
Catg D1 Exception Values: 5,974,270   6,719,927      
Catg F1 Exception Values: 669,510   664,099      
Total Test Values (4): 45,797,145   47,343,307      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 2,367,165

Confidence Interval Values (5)

State Lower Limit: 44,976,142 (State Test Value minus Margin of Error Percent)
Local Test Value: 45,797,145 (Within Confidence Interval)
State Upper Limit: 49,710,472 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 49,467,715 (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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