taxes Property Tax Assistance

2020 Confidence Interval Detail

Williamson County
166-905/Thorndale ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 4,305,235 1.0318 4,172,548 13 25 0.027385242
E 14,782,897 0.8108 18,232,483 20 125 0.041062382
Random Totals: 19,088,132 22,405,031 33 150
CATG D1 EXCEPTION VALUES: 1,204,758 1,540,206
CATG J EXCEPTION VALUES: 1,013,362 1,124,756
Total Test Values 21,306,252 25,069,993

Margin of Error

Margin of Error Percent: 6.2393816
Margin of Error Value: 1,564,213

Confidence Interval Values(5)

Local Test Value: 21,306,252 OUTSIDE CONFIDENCE INTERVAL
State Lower Limit: 23,505,780 (State Test Value minus Margin of Error Percent)
State Upper Limit: 26,634,206 (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