2007 Confidence Interval Detail
227/Travis
227-910/Del Valle ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 217,399,625 | 0.9492 | 229,034,582 | 17 | 2,487 | .019704824 |
| A | 217,386,854 | 0.9394 | 231,410,319 | 21 | 1,783 | .005919548 |
| A | 217,393,966 | 0.9609 | 226,239,948 | 36 | 1,445 | .003879737 |
| A | 217,243,041 | 1.0121 | 214,645,826 | 20 | 976 | .012808882 |
| B | 85,304,961 | 0.7908 | 107,871,726 | 7 | 95 | .127741685 |
| B | 86,267,676 | 1.0042 | 85,906,867 | 4 | 7 | .003540213 |
| B | 81,215,361 | 0.9290 | 87,422,348 | 3 | 4 | .005250364 |
| D3 | 177,663,545 | 0.9634 | 184,413,063 | 13 | 3,678 | .033859993 |
| F1 | 136,130,313 | 0.9506 | 143,204,621 | 8 | 205 | .009010453 |
| F1 | 138,299,861 | 0.8858 | 156,129,895 | 8 | 46 | .049290927 |
| F1 | 145,648,939 | 1.0134 | 143,723,050 | 7 | 19 | .008258308 |
| F1 | 121,466,347 | 1.0956 | 110,867,422 | 3 | 5 | .006427169 |
| L1 | 114,790,015 | 0.9765 | 117,552,499 | 7 | 248 | .007326058 |
| L1 | 113,935,401 | 0.9738 | 117,000,823 | 9 | 36 | .004132598 |
| L1 | 117,383,938 | 1.0088 | 116,359,970 | 4 | 11 | .000379316 |
| L1 | 108,871,506 | 0.9976 | 109,133,426 | 3 | 5 | .000035392 |
| Random Totals: | 2,296,401,349 | 2,380,916,385 | 170 | 11,050 | ||
| Catg D1 Exception Values: | 9,064,081 | 7,600,557 | ||||
| Catg B Exception Values: | 84,069,800 | 84,072,238 | ||||
| Total Test Values (4): | 2,389,535,230 | 2,472,589,180 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 123,629,459 |
Confidence Interval Values (5)
| State Lower Limit: | 2,348,959,721 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,389,535,230 | (Within Confidence Interval) |
| State Upper Limit: | 2,596,218,639 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,000,015,753 | (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