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246/Williamson
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