2009 Confidence Interval Detail
057/Dallas
057-916/Richardson ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,364,160,810 | 0.9488 | 2,491,737,785 | 75 | 17,667 | .009364391 |
| A | 2,371,658,570 | 0.9486 | 2,500,167,162 | 75 | 12,415 | .007898932 |
| A | 2,390,776,040 | 0.9498 | 2,517,136,281 | 75 | 9,227 | .010443852 |
| A | 2,394,172,130 | 0.9582 | 2,498,614,204 | 75 | 5,798 | .006820322 |
| B | 348,019,370 | 0.9593 | 362,784,708 | 14 | 678 | .023808871 |
| B | 289,183,690 | 0.9612 | 300,856,939 | 6 | 49 | .012384812 |
| B | 299,313,220 | 0.9361 | 319,744,920 | 6 | 25 | .002424597 |
| B | 267,120,940 | 1.0130 | 263,692,932 | 4 | 10 | .007905257 |
| F1 | 1,205,842,450 | 0.9628 | 1,252,432,956 | 8 | 823 | .004676097 |
| F1 | 1,036,541,730 | 0.9286 | 1,116,241,363 | 7 | 211 | .011984049 |
| F1 | 1,109,706,710 | 0.9114 | 1,217,584,716 | 6 | 80 | .009009304 |
| F1 | 865,099,450 | 0.8996 | 961,649,011 | 6 | 14 | .003894553 |
| L1 | 348,004,030 | 1.2366 | 281,420,047 | 7 | 2,207 | .031744580 |
| L1 | 345,042,520 | 1.0151 | 339,909,881 | 7 | 330 | .001411699 |
| L1 | 355,133,800 | 1.0080 | 352,315,278 | 7 | 101 | .001830504 |
| L1 | 376,415,010 | 0.9262 | 406,407,914 | 5 | 22 | .003328647 |
| Random Totals: | 16,366,190,470 | 17,182,696,097 | 383 | 49,657 | ||
| Catg D1 Exception Values: | 9,121 | 11,407 | ||||
| Total Test Values (4): | 16,366,199,591 | 17,182,707,504 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 859,135,375 |
Confidence Interval Values (5)
| State Lower Limit: | 16,323,572,129 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 16,366,199,591 | (Within Confidence Interval) |
| State Upper Limit: | 18,041,842,879 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 16,817,288,516 | (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