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2006 Confidence Interval Detail
187/Polk
187-910/Onalaska ISD

Category Summary

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

Stratum
Variance
A 53,539,586 1.1508 46,523,797 15 1,610 .045721902
A 53,500,632 0.9742 54,917,504 10 747 .039414553
A 53,528,613 1.0695 50,050,129 17 461 .021111493
A 53,456,402 1.2010 44,509,910 22 251 .027515605
C 8,198,960 1.2375 6,625,422 26 5,613 .145707356
C 8,198,486 1.1128 7,367,439 16 2,338 .066742849
C 8,200,609 0.9612 8,531,636 17 976 .326070683
C 8,188,541 1.0491 7,805,301 11 394 .018551339
F1 3,599,105 0.9711 3,706,215 10 73 .016601500
F1 3,742,454 0.9013 4,152,284 8 28 .019937115
F1 3,673,985 0.9443 3,890,697 7 14 .011031815
F1 3,376,282 0.8862 3,809,842 4 6 .004429023
Random Totals: 261,203,655   241,890,176 163 12,511  
Catg D1 Exception Values: 3,356,658   3,197,972      
Total Test Values (4): 264,560,313   245,088,148      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 12,254,407

Confidence Interval Values (5)

State Lower Limit: 232,833,741 (State Test Value minus Margin of Error Percent)
State Upper Limit: 257,342,555 (State Test Value plus Margin of Error Percent)
Local Test Value: 264,560,313 (Outside Confidence Interval)
Value Assigned (6): 254,498,930 (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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