taxes Property Tax Assistance

2020 Confidence Interval Detail

Williamson County
246-907/Jarrell ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 383,916,368 0.9694 396,035,040 24 2,129 0.000754311
A 369,972,601 0.9695 381,611,760 25 1,584 0.001980584
A 334,185,283 0.9507 351,514,971 23 1,094 0.003314315
A 275,385,856 0.9582 287,399,140 23 593 0.001165172
E 166,781,116 0.9288 179,566,232 9 763 0.015696612
F1 29,875,666 0.9256 32,277,081 10 79 0.041484748
F1 27,096,082 0.9930 27,287,092 8 28 0.006684973
F1 30,264,970 0.8337 36,301,991 7 15 0.040527711
F1 31,170,646 0.9449 32,988,301 4 6 0.001482494
Random Totals: 1,648,648,588 1,724,981,608 133 6,291
CATG D1 EXCEPTION VALUES: 2,691,442 3,197,053
Total Test Values 1,651,340,030 1,728,178,661

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 86,408,933

Confidence Interval Values(5)

Local Test Value: 1,651,340,030 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 1,641,769,728 (State Test Value minus Margin of Error Percent)
State Upper Limit: 1,814,587,594 (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