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2009 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 34,272,060 0.9251 37,046,871 15 680 .022457741
A 35,264,590 0.9931 35,509,606 16 347 .014093901
A 35,135,390 0.8739 40,205,275 16 229 .033703270
A 38,134,840 0.8955 42,584,969 17 147 .024654215
D3 59,624,640 1.0438 57,122,667 35 2,364 .030252753
F1 3,510,878 0.7547 4,652,018 6 52 .420190084
F1 3,568,320 0.8785 4,061,833 7 22 .023351442
F1 4,970,490 0.9673 5,138,520 5 16 .008730288
F1 3,328,870 0.9975 3,337,213 3 4 .000861109
Random Totals: 217,810,078   229,658,972 120 3,861  
Catg D1 Exception Values: 4,703,211   3,167,493      
Total Test Values (4): 222,513,289   232,826,465      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 11,641,323

Confidence Interval Values (5)

State Lower Limit: 221,185,142 (State Test Value minus Margin of Error Percent)
Local Test Value: 222,513,289 (Within Confidence Interval)
State Upper Limit: 244,467,788 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 212,324,313 (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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