2010 Confidence Interval Detail
227/Travis
227-901/Austin ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 9,670,539,188 | 0.9648 | 10,023,361,513 | 95 | 58,271 | .007651741 |
| A | 8,971,284,531 | 0.9777 | 9,175,907,263 | 96 | 35,053 | .005754554 |
| A | 8,863,416,804 | 0.9650 | 9,184,887,880 | 95 | 23,450 | .005077596 |
| A | 7,913,035,632 | 0.9398 | 8,419,914,484 | 94 | 10,355 | .008902647 |
| B | 1,806,198,828 | 0.9742 | 1,854,032,876 | 60 | 6,896 | .017329757 |
| B | 2,003,134,276 | 0.9812 | 2,041,514,753 | 15 | 755 | .013355520 |
| B | 1,904,767,534 | 0.9887 | 1,926,537,407 | 9 | 124 | .000311490 |
| B | 1,823,556,604 | 0.9959 | 1,831,063,966 | 9 | 55 | .000360440 |
| C | 194,003,761 | 0.9482 | 204,602,152 | 16 | 2,542 | .030686218 |
| C | 156,156,324 | 0.9492 | 164,513,616 | 18 | 677 | .016407373 |
| C | 160,938,367 | 0.9600 | 167,644,132 | 10 | 295 | .018721680 |
| C | 212,417,586 | 0.9907 | 214,411,614 | 9 | 93 | .004199817 |
| F1 | 3,644,131,216 | 0.9228 | 3,948,993,515 | 42 | 4,213 | .022226977 |
| F1 | 3,438,928,782 | 0.9847 | 3,492,361,919 | 10 | 866 | .008711684 |
| F1 | 3,337,460,661 | 0.8930 | 3,737,357,963 | 11 | 237 | .050606115 |
| F1 | 2,960,326,765 | 0.9836 | 3,009,685,609 | 9 | 61 | .000693692 |
| L1 | 802,772,071 | 0.9643 | 832,492,037 | 10 | 6,380 | .020256241 |
| L1 | 742,354,352 | 0.9601 | 773,205,241 | 10 | 1,102 | .021656628 |
| L1 | 714,282,041 | 1.0109 | 706,580,316 | 10 | 294 | .010307572 |
| L1 | 800,030,360 | 1.0577 | 756,386,839 | 9 | 66 | .029035806 |
| Random Totals: | 60,119,735,683 | 62,465,455,095 | 637 | 151,785 | ||
| Catg J Exception Values: | 235,050,036 | 315,026,323 | ||||
| Catg D1 Exception Values: | 1,920,357 | 1,691,538 | ||||
| Total Test Values (4): | 60,356,706,076 | 62,782,172,956 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 3,139,108,648 |
Confidence Interval Values (5)
| State Lower Limit: | 59,643,064,308 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 60,356,706,076 | (Within Confidence Interval) |
| State Upper Limit: | 65,921,281,604 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 59,878,940,779 | (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