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2011 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 38,526,830 1.1274 34,173,168 11 691 .065754437
A 39,127,390 0.9517 41,113,155 10 361 .005160726
A 39,606,550 0.8454 46,849,480 10 245 .025328657
A 39,841,780 0.9462 42,107,144 10 145 .030623667
D3 62,673,717 0.9257 67,704,134 15 2,354 .014127901
F1 3,371,478 0.9349 3,606,245 8 54 .019893878
F1 3,741,840 0.9378 3,990,019 7 24 .028005264
F1 4,020,320 0.9941 4,044,181 6 14 .021799670
F1 3,813,610 0.9011 4,232,172 3 6 .004276669
Random Totals: 234,723,515   247,819,698 80 3,894  
Catg D1 Exception Values: 4,734,421   3,183,239      
Total Test Values (4): 239,457,936   251,002,937      

Margin of Error

Margin of Error Percent: 5.0000001
Margin of Error Value: 12,550,147

Confidence Interval Values (5)

State Lower Limit: 238,452,790 (State Test Value minus Margin of Error Percent)
Local Test Value: 239,457,936 (Within Confidence Interval)
State Upper Limit: 263,553,084 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 226,342,509 (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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