2009 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 | 1,385,838,924 | 0.9910 | 1,398,424,747 | 74 | 5,459 | .008496519 |
| A | 1,445,998,473 | 0.9926 | 1,456,778,635 | 74 | 3,535 | .007360596 |
| A | 1,458,795,955 | 0.9975 | 1,462,452,085 | 73 | 2,288 | .011049154 |
| A | 1,450,664,905 | 0.9682 | 1,498,311,201 | 35 | 1,035 | .010445507 |
| C | 82,590,363 | 0.9539 | 86,581,783 | 23 | 1,880 | .073583333 |
| C | 77,473,130 | 0.9957 | 77,807,703 | 16 | 670 | .006310129 |
| C | 102,124,015 | 0.9120 | 111,978,087 | 16 | 435 | .017305763 |
| C | 82,428,765 | 1.0474 | 78,698,458 | 8 | 112 | .036278964 |
| F1 | 200,482,077 | 1.0265 | 195,306,456 | 7 | 275 | .013031299 |
| F1 | 191,176,261 | 0.9633 | 198,459,733 | 6 | 65 | .036249819 |
| F1 | 138,740,370 | 1.0109 | 137,244,406 | 5 | 18 | .000317816 |
| F1 | 165,925,927 | 1.0067 | 164,821,622 | 2 | 4 | .000801034 |
| Random Totals: | 6,782,239,165 | 6,866,864,916 | 339 | 15,776 | ||
| Catg D1 Exception Values: | 1,748,251 | 1,093,391 | ||||
| Catg D3 Exception Values: | 1,500,000 | 1,500,000 | ||||
| Total Test Values (4): | 6,785,487,416 | 6,869,458,307 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 343,472,915 |
Confidence Interval Values (5)
| State Lower Limit: | 6,525,985,392 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 6,785,487,416 | (Within Confidence Interval) |
| State Upper Limit: | 7,212,931,222 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 7,055,548,113 | (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