taxes Property Tax Assistance

2019 Confidence Interval Detail

Polk County
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 123,875,386 0.9423 131,460,666 47 1745 0.078454236
A 139,854,641 0.9288 150,575,626 45 901 0.018105002
A 138,751,063 0.9634 144,022,278 22 487 0.017812529
A 146,060,752 0.9929 147,105,199 17 261 0.051845675
C1 11,220,064 0.8919 12,579,957 34 3452 0.054245659
C1 12,618,016 0.8968 14,070,045 20 1219 0.044625581
C1 11,302,122 0.9816 11,513,979 10 154 0.097047501
C1 11,410,357 0.9666 11,804,632 9 57 0.019205638
Random Totals: 595,092,401 623,132,382 204 8,276
CATG D1 EXCEPTION VALUES: 4,680,334 4,598,943
Total Test Values(1) 599,772,735 627,731,325

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 31,386,566

Confidence Interval Values(5)

Local Test Value: 599,772,735 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 596,344,759 (State Test Value minus Margin of Error Percent)
State Upper Limit: 659,117,891 (State Test Value plus Margin of Error Percent)

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