2008 Confidence Interval Detail
227/Travis
227-913/Lake Travis ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,105,425,666 | 0.9696 | 1,140,084,226 | 69 | 4,740 | .013879271 |
| A | 1,373,606,000 | 0.9495 | 1,446,662,454 | 70 | 3,680 | .011805177 |
| A | 1,509,580,528 | 0.9533 | 1,583,531,447 | 70 | 2,572 | .007606710 |
| A | 1,503,246,902 | 0.9414 | 1,596,820,588 | 70 | 1,156 | .022050893 |
| C | 110,567,129 | 0.9001 | 122,838,717 | 56 | 2,850 | .138307376 |
| C | 82,404,641 | 0.8224 | 100,200,196 | 29 | 667 | .061572102 |
| C | 85,537,758 | 0.9140 | 93,586,168 | 28 | 339 | .016666121 |
| C | 73,983,052 | 0.9785 | 75,608,638 | 7 | 88 | .001873196 |
| F1 | 139,743,078 | 0.7121 | 196,240,806 | 7 | 260 | .081783553 |
| F1 | 165,014,442 | 0.9589 | 172,087,227 | 6 | 79 | .001327146 |
| F1 | 194,369,367 | 0.9820 | 197,932,146 | 5 | 31 | .002985621 |
| F1 | 204,055,569 | 0.9551 | 213,648,381 | 4 | 6 | .003955078 |
| Random Totals: | 6,547,534,132 | 6,939,240,994 | 421 | 16,468 | ||
| Catg D1 Exception Values: | 1,741,761 | 1,230,472 | ||||
| Total Test Values (4): | 6,549,275,893 | 6,940,471,466 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 347,023,573 |
Confidence Interval Values (5)
| Local Test Value: | 6,549,275,893 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 6,593,447,893 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 7,287,495,039 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 6,668,117,344 | (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