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2012 Confidence Interval Detail
109/Hill
109-910/Mount Calm ISD

Category Summary

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

Stratum
Variance
A 1,767,730 0.9500 1,860,768 9 60 .003146227
A 2,459,210 0.9665 2,544,449 8 51 .002680745
A 2,020,900 0.9984 2,024,139 8 29 .000481396
A 2,071,040 0.9996 2,071,869 6 16 .001419646
D3 10,143,650 0.9617 10,547,624 15 550 .010700548
Random Totals: 18,462,530   19,048,849 46 706  
Catg J Exception Values: 744,684   801,936      
Catg D1 Exception Values: 1,934,551   1,491,099      
Total Test Values (4): 21,141,765   21,341,884      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,067,094

Confidence Interval Values (5)

State Lower Limit: 20,274,790 (State Test Value minus Margin of Error Percent)
Local Test Value: 21,141,765 (Within Confidence Interval)
State Upper Limit: 22,408,978 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 20,092,440 (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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