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2007 Confidence Interval Detail
072/Erath
072-901/Three-Way ISD

Category Summary

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

Stratum
Variance
D3 26,366,400 1.0909 24,169,401 12 881 .053074542
Random Totals: 26,366,400   24,169,401 12 881  
Catg J Exception Values: 1,999,880   2,027,904      
Catg D1 Exception Values: 4,903,810   4,145,392      
Total Test Values (4): 33,270,090   30,342,697      

Margin of Error

Margin of Error Percent: 11.5746764
Margin of Error Value: 3,512,069

Confidence Interval Values (5)

State Lower Limit: 26,830,628 (State Test Value minus Margin of Error Percent)
Local Test Value: 33,270,090 (Within Confidence Interval)
State Upper Limit: 33,854,766 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 33,868,390 (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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