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2011 Confidence Interval Detail
198/Robertson
198-906/Mumford ISD

Category Summary

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

Stratum
Variance
D3 3,586,110 0.9403 3,813,793 14 227 .119473347
G1 17,273,029 1.0408 16,595,916 9 22 .016490480
G1 17,989,059 0.9901 18,168,931 5 11 .000762889
G1 20,619,603 1.0022 20,574,339 4 7 .001270315
Random Totals: 59,467,801   59,152,979 32 267  
Catg J Exception Values: 6,369,543   6,466,158      
Catg D1 Exception Values: 4,976,410   5,321,732      
Catg G1 Exception Values: 12,491,180   12,200,772      
Total Test Values (4): 83,304,934   83,141,641      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 4,157,082

Confidence Interval Values (5)

State Lower Limit: 78,984,559 (State Test Value minus Margin of Error Percent)
Local Test Value: 83,304,934 (Within Confidence Interval)
State Upper Limit: 87,298,723 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 89,641,511 (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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