taxes Property Tax Assistance

2021 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 140,405,939 0.9757 143,902,776 37 1,806 0.077985419
A 161,308,721 0.9579 168,398,289 53 941 0.027290942
A 159,186,465 0.9604 165,750,172 49 516 0.038343380
A 163,138,530 0.9544 170,933,078 20 271 0.012230703
C1 10,446,047 1.0183 10,258,320 18 2,952 0.107193113
C1 15,013,828 0.8162 18,394,790 11 1,682 0.167999454
C1 11,231,244 0.9876 11,372,260 10 214 0.001623074
C1 12,999,690 1.2900 10,077,279 10 68 0.065399646
Random Totals: 673,730,464 699,086,964 208 8,450
CATG D1 EXCEPTION VALUES: 4,579,229 4,423,982
Total Test Values 678,309,693 703,510,946

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 35,175,547

Confidence Interval Values(5)

Local Test Value: 678,309,693 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 668,335,399 (State Test Value minus Margin of Error Percent)
State Upper Limit: 738,686,493 (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