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2006 Confidence Interval Detail
045/Colorado
045-902/Columbus ISD

Category Summary

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

Stratum
Variance
A 51,039,802 0.9642 52,934,870 22 891 .020091859
A 51,092,447 0.9927 51,468,165 12 467 .006190659
A 51,059,957 0.9454 54,008,840 10 329 .007613695
A 50,847,873 0.9979 50,954,878 7 213 .002248027
D3 193,664,494 0.9726 199,120,393 56 7,343 .040962770
F1 14,932,511 0.9123 16,367,983 7 162 .002982700
F1 15,066,413 0.9908 15,206,311 8 50 .001969676
F1 15,001,373 0.9845 15,237,555 8 19 .003581730
F1 14,191,945 1.0163 13,964,326 4 8 .001013064
G1 8,313,945 1.0879 7,642,196 5 20 .060446440
G1 7,298,455 1.0046 7,265,036 3 5 .000274004
G1 6,837,179 2.7810 2,458,533 2 3 .179685132
Random Totals: 479,346,394   486,629,086 144 9,510  
Catg J Exception Values: 23,355,151   25,344,893      
Catg D1 Exception Values: 24,062,821   22,248,245      
Catg G1 Exception Values: 17,116,002   17,198,082      
Total Test Values (4): 543,880,368   551,420,306      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 27,571,015

Confidence Interval Values (5)

State Lower Limit: 523,849,291 (State Test Value minus Margin of Error Percent)
Local Test Value: 543,880,368 (Within Confidence Interval)
State Upper Limit: 578,991,321 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 576,467,670 (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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