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2011 Confidence Interval Detail
234/Van Zandt
234-905/Martins Mill ISD

Category Summary

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

Stratum
Variance
A 4,917,750 0.9218 5,334,943 7 98 .008026156
A 4,857,050 0.9393 5,170,925 7 53 .005933810
A 4,743,850 0.9761 4,860,004 7 34 .005455708
A 4,801,690 1.0110 4,749,446 7 21 .005734858
D3 64,079,340 0.9638 66,486,138 15 1,936 .087391969
Random Totals: 83,399,680   86,601,456 43 2,142  
Catg D1 Exception Values: 4,399,050   2,577,142      
Total Test Values (4): 87,798,730   89,178,598      

Margin of Error

Margin of Error Percent: 11.4680217
Margin of Error Value: 10,227,021

Confidence Interval Values (5)

State Lower Limit: 78,951,577 (State Test Value minus Margin of Error Percent)
Local Test Value: 87,798,730 (Within Confidence Interval)
State Upper Limit: 99,405,619 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 88,168,397 (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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