taxes Property Tax Assistance

2017 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 115,594,759 1.0272 112,533,839 39 1,786 .086918309
A 120,143,917 0.9455 127,069,188 18 844 .024958797
A 123,300,269 0.9373 131,548,351 21 472 .027623368
A 141,844,433 1.0071 140,844,437 17 275 .004601678
C1 10,733,731 0.8038 13,353,734 13 3,494 .406092423
C1 10,917,225 1.2408 8,798,537 22 1,211 .192966185
C1 11,837,959 0.9948 11,899,838 13 183 .039751882
C1 11,562,512 0.9671 11,955,860 11 65 .015755880
Random Totals: 545,934,805   558,003,784 154 8,330  
Catg D1 Exception Values: 4,336,305   4,301,430      
Total Test Values (4): 550,271,110   562,305,214      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 28,115,260

Confidence Interval Values (5)

State Lower Limit: 534,189,954 (State Test Value minus Margin of Error Percent)
Local Test Value: 550,271,110 (Within Confidence Interval)
State Upper Limit: 590,420,474 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 539,718,377 (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, D2, E, 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