2010 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 | 2,032,647,079 | 0.9694 | 2,096,809,448 | 60 | 14,251 | .003513261 |
| A | 2,220,684,684 | 0.9729 | 2,282,541,560 | 60 | 12,008 | .005272245 |
| A | 2,121,710,368 | 0.9602 | 2,209,654,622 | 59 | 9,010 | .004321675 |
| A | 1,978,472,598 | 0.9724 | 2,034,628,340 | 61 | 5,923 | .004057030 |
| B | 424,583,604 | 1.0025 | 423,524,792 | 22 | 1,969 | .008514222 |
| B | 399,900,996 | 0.9067 | 441,051,060 | 8 | 39 | .021148183 |
| B | 515,642,981 | 0.9589 | 537,744,271 | 6 | 23 | .003416307 |
| B | 221,957,301 | 0.9895 | 224,312,583 | 5 | 7 | .003189204 |
| C | 102,441,279 | 0.9503 | 107,798,884 | 12 | 248 | .008934205 |
| C | 101,376,121 | 0.9721 | 104,285,692 | 12 | 93 | .006029125 |
| C | 96,617,722 | 0.9672 | 99,894,254 | 9 | 43 | .008396504 |
| C | 72,629,379 | 0.9317 | 77,953,611 | 7 | 11 | .016478522 |
| F1 | 806,116,369 | 0.9687 | 832,163,073 | 12 | 717 | .006552862 |
| F1 | 766,070,523 | 0.9779 | 783,383,294 | 9 | 174 | .001046065 |
| F1 | 802,818,050 | 0.9823 | 817,283,976 | 9 | 61 | .000103598 |
| F1 | 601,317,470 | 0.9917 | 606,350,176 | 6 | 12 | .000130678 |
| L1 | 166,881,830 | 1.0352 | 161,207,332 | 10 | 1,190 | .003593420 |
| L1 | 158,394,385 | 0.9609 | 164,839,614 | 10 | 241 | .032994127 |
| L1 | 174,775,681 | 1.0049 | 173,923,456 | 10 | 68 | .006551419 |
| L1 | 120,589,929 | 1.0209 | 118,121,196 | 6 | 13 | .002511715 |
| Random Totals: | 13,885,628,349 | 14,297,471,234 | 393 | 46,101 | ||
| Catg J Exception Values: | 122,919,303 | 118,962,744 | ||||
| Catg D1 Exception Values: | 1,786,363 | 1,556,991 | ||||
| Total Test Values (4): | 14,010,334,015 | 14,417,990,969 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 720,899,548 |
Confidence Interval Values (5)
| State Lower Limit: | 13,697,091,421 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 14,010,334,015 | (Within Confidence Interval) |
| State Upper Limit: | 15,138,890,517 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 14,714,928,220 | (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