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246/Williamson
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 | 17,304 | .004371952 |
| A | 3,840,131,110 | 0.9880 | 3,886,772,379 | 345 | 13,666 | .005275002 |
| A | 4,123,345,283 | 0.9896 | 4,166,678,742 | 306 | 11,764 | .005255542 |
| A | 4,340,471,629 | 0.9817 | 4,421,382,937 | 252 | 8,919 | .006701485 |
| B | 1,154,622,157 | 0.9766 | 1,182,287,689 | 30 | 3,478 | .005400464 |
| B | 922,075,249 | 0.8118 | 1,135,840,415 | 8 | 46 | .096452638 |
| B | 1,160,226,176 | 0.9636 | 1,204,053,732 | 7 | 29 | .002534181 |
| B | 1,090,405,934 | 0.9978 | 1,092,810,116 | 6 | 20 | .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 | .118911220 |
| C1 | 51,973,206 | 0.9717 | 53,486,885 | 8 | 31 | .317919694 |
| C1 | 68,346,816 | 0.5994 | 114,025,385 | 6 | 16 | .236829899 |
| F1 | 1,341,503,413 | 0.9858 | 1,360,827,159 | 14 | 870 | .004228125 |
| F1 | 1,389,844,204 | 0.9684 | 1,435,196,411 | 10 | 227 | .000982881 |
| F1 | 1,399,613,403 | 1.0014 | 1,397,656,684 | 9 | 77 | .004369300 |
| F1 | 1,431,073,310 | 1.0084 | 1,419,152,430 | 6 | 19 | .000796324 |
| L1 | 241,375,215 | 1.1484 | 210,183,921 | 12 | 1,508 | .141853745 |
| L1 | 239,486,315 | 0.9387 | 255,125,509 | 11 | 280 | .011064922 |
| L1 | 299,778,996 | 0.9954 | 301,164,352 | 10 | 91 | .001467851 |
| L1 | 251,298,343 | 1.0684 | 235,209,980 | 8 | 19 | .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 (4): | 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)
| State Lower Limit: | 26,483,711,530 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 27,256,197,489 | (Within Confidence Interval) |
| State Upper Limit: | 29,271,470,638 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 26,961,768,603 | (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, 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
(6) Includes local value of unstudied property categories and sub-categories