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2011 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 60,065,122 0.9504 63,199,834 13 861 .020223885
A 60,331,441 0.9532 63,293,581 14 474 .009363911
A 61,585,810 0.9787 62,926,137 12 346 .006390460
A 63,287,960 1.0049 62,979,361 12 229 .013532280
D3 273,560,236 1.0199 268,222,606 21 7,465 .011740918
F1 21,265,990 0.9530 22,314,785 10 165 .019035334
F1 21,027,660 0.9597 21,910,660 9 45 .007607819
F1 25,181,380 0.9541 26,392,810 6 19 .020750004
F1 15,126,510 0.9264 16,328,271 4 5 .002892446
G1 18,093,313 0.9968 18,151,397 7 21 .000678105
G1 15,909,243 1.0351 15,369,764 3 4 .004723536
G1 22,001,924 1.0137 21,704,571 2 3 .000011189
Random Totals: 657,436,589   662,793,777 113 9,637  
Catg J Exception Values: 22,383,641   21,770,999      
Catg D1 Exception Values: 23,993,363   22,694,492      
Catg G1 Exception Values: 10,806,495   10,201,073      
Total Test Values (4): 714,620,088   717,460,341      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 35,873,017

Confidence Interval Values (5)

State Lower Limit: 681,587,324 (State Test Value minus Margin of Error Percent)
Local Test Value: 714,620,088 (Within Confidence Interval)
State Upper Limit: 753,333,358 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 782,272,685 (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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