2009 Confidence Interval Detail
227/Travis
011-902/Elgin ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 34,950,722 | 1.0447 | 33,455,271 | 8 | 330 | .009642697 |
| A | 32,305,235 | 1.0137 | 31,868,635 | 8 | 255 | .017139556 |
| A | 29,017,095 | 1.0304 | 28,161,001 | 8 | 194 | .002660335 |
| A | 31,179,581 | 0.9922 | 31,424,694 | 8 | 137 | .026545314 |
| D3 | 28,172,885 | 1.0111 | 27,863,599 | 18 | 857 | .004025597 |
| Random Totals: | 155,625,518 | 152,773,200 | 50 | 1,773 | ||
| Catg D1 Exception Values: | 5,199,394 | 5,080,466 | ||||
| Total Test Values (4): | 160,824,912 | 157,853,666 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 7,892,683 |
Confidence Interval Values (5)
| State Lower Limit: | 149,960,983 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 160,824,912 | (Within Confidence Interval) |
| State Upper Limit: | 165,746,349 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 178,908,605 | (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