taxes Property Tax Assistance

2016 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 2,810,811,362 0.9998 2,811,373,637 450 15,298 .004815842
A 3,330,398,203 1.0040 3,317,129,684 476 13,625 .005320631
A 3,719,203,371 0.9972 3,729,646,381 468 11,969 .004511715
A 4,103,066,155 1.0050 4,082,652,891 328 9,299 .004960378
B 843,721,885 0.9250 912,131,768 38 2,800 .013680594
B 644,505,519 0.9768 659,813,185 8 38 .018791161
B 521,569,832 0.9275 562,339,442 8 17 .013743178
B 1,355,959,459 0.9860 1,375,212,433 7 30 .001857360
C1 76,354,336 0.9451 80,789,690 10 231 .030086949
C1 73,825,675 0.9633 76,638,301 9 80 .146569109
C1 86,600,444 1.0313 83,972,117 8 47 .002239538
C1 49,234,279 1.0151 48,501,900 7 9 .009962679
F1 1,110,279,949 0.7649 1,451,536,082 13 829 .110920961
F1 1,133,906,691 0.8828 1,284,443,465 10 218 .099996864
F1 1,205,274,163 0.8304 1,451,438,058 9 78 .033302235
F1 1,268,504,312 0.9343 1,357,705,568 6 21 .006840088
L1 256,902,011 1.0380 247,497,120 10 1,571 .005237755
L1 230,109,998 1.0402 221,217,072 11 246 .021127526
L1 223,920,675 0.9706 230,703,354 9 61 .015686994
L1 219,477,920 1.0145 216,340,976 6 18 .010896896
Random Totals: 23,263,626,239   24,201,083,124 1,891 56,485  
Catg D1 Exception Values: 1,499,186   1,530,177      
Total Test Values (4): 23,265,125,425   24,202,613,301      

Margin of Error

Margin of Error Percent: 5.0000000
Margin of Error Value: 1,210,130,665

Confidence Interval Values (5)

State Lower Limit: 22,992,482,636 (State Test Value minus Margin of Error Percent)
Local Test Value: 23,265,125,425 (Within Confidence Interval)
State Upper Limit: 25,412,743,966 (State Test Value plus Margin of Error Percent)
Value Assigned (6): 22,839,601,822 (See ISD Summary Worksheet)

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, D3, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values
(6) Includes local value of unstudied property categories and sub-categories