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2006 Confidence Interval Detail
250/Wood
250-906/Alba-Golden ISD

Category Summary

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

Stratum
Variance
A 31,582,207 1.0768 29,329,687 15 575 .083696627
A 31,488,033 0.9843 31,990,280 15 316 .026131637
A 31,582,673 1.0258 30,788,334 17 213 .012743459
A 31,455,968 1.1126 28,272,486 15 120 .035425957
D3 60,421,080 1.0334 58,468,241 24 2,571 .026729695
F1 3,222,363 0.8947 3,601,613 7 55 .021843925
F1 3,139,643 0.8300 3,782,702 6 21 .018481752
F1 3,463,228 0.6871 5,040,355 6 12 .130474874
Random Totals: 196,355,195   191,273,698 105 3,883  
Catg D1 Exception Values: 5,700,830   3,666,925      
Catg F1 Exception Values: 2,453,544   2,592,010      
Total Test Values (4): 204,509,569   197,532,633      

Margin of Error

Margin of Error Percent: 5.0000002
Margin of Error Value: 9,876,632

Confidence Interval Values (5)

State Lower Limit: 187,656,001 (State Test Value minus Margin of Error Percent)
Local Test Value: 204,509,569 (Within Confidence Interval)
State Upper Limit: 207,409,265 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 188,474,603 (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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