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2008 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 1,924,800 1.1806 1,630,357 7 67 .011321229
A 2,044,330 1.0079 2,028,306 8 42 .026358936
A 1,944,840 0.8969 2,168,402 8 28 .021491586
A 2,577,980 0.9549 2,699,738 7 21 .003640161
D3 9,331,281 0.9100 10,254,155 21 524 .015527223
Random Totals: 17,823,231   18,780,958 51 682  
Catg J Exception Values: 695,240   684,004      
Catg D1 Exception Values: 1,950,360   1,461,604      
Total Test Values (4): 20,468,831   20,926,566      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,046,328

Confidence Interval Values (5)

State Lower Limit: 19,880,238 (State Test Value minus Margin of Error Percent)
Local Test Value: 20,468,831 (Within Confidence Interval)
State Upper Limit: 21,972,894 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 18,141,161 (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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