taxes Property Tax Assistance

2018 Confidence Interval Detail

246/Williamson
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 3,782,613,968 0.9782 3,866,912,664 391 17304 0.004371952
A 3,840,131,110 0.9880 3,886,772,379 345 13666 0.005275002
A 4,123,345,283 0.9896 4,166,678,742 306 11764 0.005255542
A 4,340,471,629 0.9817 4,421,382,937 252 8919 0.006701485
B 1,154,622,157 0.9766 1,182,287,689 30 3478 0.005400464
B 922,075,249 0.8118 1,135,840,415 8 46 0.096452638
B 1,160,226,176 0.9636 1,204,053,732 7 29 0.002534181
B 1,090,405,934 0.9978 1,092,810,116 6 20 0.004637411
C1 59,925,069 0.7314 81,932,006 10 199 1.259822215
C1 66,964,688 1.2013 55,743,518 10 79 0.118911220
C1 51,973,206 0.9717 53,486,885 8 31 0.317919694
C1 68,346,816 0.5994 114,025,385 6 16 0.236829899
F1 1,341,503,413 0.9858 1,360,827,159 14 870 0.004228125
F1 1,389,844,204 0.9684 1,435,196,411 10 227 0.000982881
F1 1,399,613,403 1.0014 1,397,656,684 9 77 0.004369300
F1 1,431,073,310 1.0084 1,419,152,430 6 19 0.000796324
L1 241,375,215 1.1484 210,183,921 12 1508 0.141853745
L1 239,486,315 0.9387 255,125,509 11 280 0.011064922
L1 299,778,996 0.9954 301,164,352 10 91 0.001467851
L1 251,298,343 1.0684 235,209,980 8 19 0.021241143
Random Totals: 27,255,074,484 27,876,442,914 1,459 58,642
CATG D1 EXCEPTION VALUES: 1,123,005 1,148,170
Total Test Values(1) 27,256,197,489 27,877,591,084

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,393,879,554

Confidence Interval Values(5)

Local Test Value: 27,256,197,489 WITHIN CONFIDENCE INTERVAL
State Lower Limit: 26,483,711,530 (State Test Value minus Margin of Error Percent)
State Upper Limit: 29,271,470,638 (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