2008 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 | 6,947,871,430 | 0.9372 | 7,413,435,158 | 75 | 48,540 | .026149797 |
| A | 9,028,124,356 | 0.9628 | 9,376,946,776 | 75 | 40,779 | .007371628 |
| A | 8,916,560,229 | 0.9729 | 9,164,929,827 | 75 | 26,285 | .007096024 |
| A | 10,095,045,182 | 0.9256 | 10,906,487,880 | 74 | 14,896 | .013400573 |
| B | 1,771,158,916 | 0.9716 | 1,822,930,132 | 57 | 7,617 | .003441173 |
| B | 1,719,664,623 | 0.8219 | 2,092,303,958 | 46 | 1,306 | .055223075 |
| B | 1,985,357,433 | 0.8682 | 2,286,751,247 | 12 | 166 | .010292105 |
| B | 2,224,061,324 | 0.9039 | 2,460,517,009 | 13 | 66 | .006297670 |
| C | 181,712,936 | 0.7055 | 257,566,174 | 52 | 2,196 | .352398043 |
| C | 174,477,991 | 0.8454 | 206,385,132 | 22 | 583 | .070961205 |
| C | 159,877,260 | 0.9649 | 165,693,087 | 8 | 197 | .044494276 |
| C | 114,736,737 | 1.0004 | 114,690,861 | 7 | 25 | .000109521 |
| D3 | 218,528,340 | 1.3436 | 162,643,897 | 12 | 1,596 | .560008425 |
| F1 | 3,624,982,004 | 0.8271 | 4,382,761,461 | 58 | 4,310 | .053897286 |
| F1 | 3,494,277,026 | 1.0015 | 3,489,043,461 | 12 | 831 | .028327731 |
| F1 | 3,647,362,165 | 1.0033 | 3,635,365,459 | 12 | 257 | .007564068 |
| F1 | 3,748,895,016 | 0.9145 | 4,099,393,128 | 12 | 73 | .041044552 |
| L1 | 771,873,582 | 0.9955 | 775,362,714 | 8 | 6,545 | .000918215 |
| L1 | 800,594,078 | 0.9742 | 821,796,426 | 7 | 1,384 | .001563451 |
| L1 | 854,547,399 | 0.9271 | 921,742,422 | 8 | 428 | .002044480 |
| L1 | 943,087,408 | 1.0091 | 934,582,705 | 7 | 100 | .002453983 |
| Random Totals: | 61,422,795,435 | 65,491,328,914 | 652 | 158,180 | ||
| Catg D1 Exception Values: | 2,076,736 | 1,515,198 | ||||
| Total Test Values (4): | 61,424,872,171 | 65,492,844,112 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 3,274,642,206 |
Confidence Interval Values (5)
| Local Test Value: | 61,424,872,171 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 62,218,201,906 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 68,767,486,318 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 58,956,096,148 | (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