taxes Property Tax Assistance

2020 Confidence Interval Detail

Williamson County
246-909/Round Rock ISD

Category Summary

(1)
Category 		(1)
Local
Value 		(1)
Stratum
Ratio 		(1)
State
Value 		(2)
Sample
Size 		(3)
Total
Parcels
Stratum
Variance
A 4,276,471,782 0.9627 4,442,164,519 141 18,189 0.003367796
A 4,287,210,615 0.9576 4,477,036,983 149 14,295 0.003649605
A 4,695,275,851 0.9607 4,887,348,653 147 12,723 0.004178194
A 5,085,797,611 0.9549 5,326,000,221 146 9,855 0.003492835
B 1,000,592,799 0.9375 1,067,298,986 22 729 0.010575985
B 952,209,587 0.9962 955,841,786 8 25 0.008122170
B 906,112,656 0.9742 930,109,481 7 19 0.002113874
B 1,189,874,012 1.0433 1,140,490,762 6 20 0.009697920
F1 1,480,463,113 0.9671 1,530,827,332 12 831 0.004752997
F1 1,510,385,072 0.9240 1,634,615,879 10 205 0.015154070
F1 1,493,530,709 0.9530 1,567,188,572 9 65 0.016872587
F1 1,818,293,438 0.9920 1,832,957,095 6 18 0.006960162
L1 294,969,296 0.9998 295,028,302 11 1,460 0.026112049
L1 286,891,719 0.9269 309,517,444 10 205 0.011854642
L1 332,448,335 0.9393 353,932,008 12 64 0.022506880
L1 214,270,974 0.9715 220,566,585 5 11 0.001298552
Random Totals: 29,824,797,569 30,970,924,608 701 58,714
CATG D1 EXCEPTION VALUES: 911,995 916,684
Total Test Values 29,825,709,564 30,971,841,292

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,548,592,065

Confidence Interval Values(5)

Local Test Value: 29,825,709,564 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 29,423,249,227 (State Test Value minus Margin of Error Percent)
State Upper Limit: 32,520,433,357 (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