2006 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 | 2,320,494,976 | 0.9641 | 2,406,902,786 | 57 | 16,985 | .005510424 |
| A | 2,320,559,920 | 0.9647 | 2,405,473,121 | 57 | 12,885 | .007116605 |
| A | 2,320,603,784 | 0.9807 | 2,366,272,850 | 57 | 9,574 | .005851397 |
| A | 2,320,218,144 | 0.9662 | 2,401,384,955 | 57 | 6,368 | .004485923 |
| B | 405,904,071 | 0.9568 | 424,230,843 | 57 | 1,998 | .007235171 |
| B | 401,822,412 | 0.9052 | 443,904,565 | 7 | 47 | .023317247 |
| B | 404,123,468 | 0.9827 | 411,237,883 | 5 | 20 | .007027455 |
| B | 392,379,668 | 1.0159 | 386,238,476 | 6 | 12 | .003957638 |
| C | 109,197,125 | 0.9795 | 111,482,517 | 17 | 2,172 | .020037961 |
| C | 109,850,809 | 0.9945 | 110,458,330 | 8 | 226 | .008463552 |
| C | 109,380,531 | 1.0118 | 108,104,893 | 8 | 79 | .007826920 |
| C | 108,312,390 | 1.0035 | 107,934,619 | 7 | 20 | .000438006 |
| F1 | 738,420,959 | 0.9729 | 758,989,577 | 10 | 682 | .007962730 |
| F1 | 742,256,307 | 0.9036 | 821,443,456 | 10 | 178 | .029967654 |
| F1 | 734,180,707 | 0.9898 | 741,746,522 | 9 | 62 | .002808650 |
| F1 | 733,379,658 | 0.9305 | 788,156,537 | 8 | 15 | .005637201 |
| L1 | 245,316,438 | 1.0174 | 241,120,934 | 7 | 1,298 | .009066650 |
| L1 | 245,450,181 | 0.9740 | 252,002,239 | 7 | 211 | .002387441 |
| L1 | 249,806,354 | 0.9881 | 252,814,851 | 7 | 55 | .015764087 |
| L1 | 239,083,826 | 0.9672 | 247,191,714 | 5 | 13 | .000173967 |
| Random Totals: | 15,250,741,728 | 15,787,091,668 | 406 | 52,900 | ||
| Catg D1 Exception Values: | 2,012,192 | 1,932,306 | ||||
| Total Test Values (4): | 15,252,753,920 | 15,789,023,974 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 789,451,199 |
Confidence Interval Values (5)
| State Lower Limit: | 14,999,572,775 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 15,252,753,920 | (Within Confidence Interval) |
| State Upper Limit: | 16,578,475,173 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 16,298,141,871 | (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