2008 Confidence Interval Detail
227/Travis
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 | 3,419,629,942 | 0.9564 | 3,575,522,733 | 60 | 12,017 | .008018834 |
| B | 567,189,688 | 0.8780 | 646,001,923 | 16 | 311 | .076147832 |
| F1 | 967,985,596 | 0.8260 | 1,171,895,395 | 12 | 372 | .061095556 |
| L1 | 513,302,737 | 0.9923 | 517,285,838 | 10 | 1,158 | .000407618 |
| Random Totals: | 5,468,107,963 | 5,910,705,889 | 98 | 13,858 | ||
| Catg D1 Exception Values: | 237,421 | 175,272 | ||||
| Total Test Values (4): | 5,468,345,384 | 5,910,881,161 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 295,544,058 |
Confidence Interval Values (5)
| Local Test Value: | 5,468,345,384 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 5,615,337,103 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 6,206,425,219 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,585,261,178 | (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