2008 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 | 2,266,501,930 | 0.9937 | 2,280,871,420 | 63 | 17,192 | .002219049 |
| A | 2,318,744,240 | 1.0100 | 2,295,786,376 | 71 | 12,484 | .004551220 |
| A | 2,316,364,260 | 0.9904 | 2,338,816,902 | 74 | 9,286 | .002074088 |
| A | 2,726,655,470 | 0.9881 | 2,759,493,442 | 74 | 6,891 | .004987814 |
| B | 295,070,880 | 1.0483 | 281,475,608 | 15 | 633 | .003176570 |
| B | 355,671,130 | 0.9496 | 374,548,368 | 6 | 64 | .007815727 |
| B | 338,107,050 | 1.0144 | 333,307,423 | 6 | 30 | .002464335 |
| B | 321,619,920 | 0.9176 | 350,501,221 | 4 | 11 | .014010635 |
| F1 | 1,164,199,900 | 0.9103 | 1,278,918,928 | 12 | 818 | .018091236 |
| F1 | 1,158,368,210 | 0.7428 | 1,559,461,780 | 7 | 239 | .022254450 |
| F1 | 1,210,877,750 | 0.9013 | 1,343,479,141 | 6 | 88 | .012386053 |
| F1 | 1,146,770,600 | 0.9415 | 1,218,025,066 | 5 | 21 | .006059412 |
| L1 | 337,057,720 | 1.1328 | 297,543,891 | 7 | 2,298 | .053302192 |
| L1 | 333,512,350 | 1.1291 | 295,378,930 | 7 | 346 | .006275260 |
| L1 | 349,483,870 | 1.0624 | 328,956,956 | 8 | 111 | .003833654 |
| L1 | 380,771,910 | 0.8907 | 427,497,373 | 5 | 25 | .019906941 |
| Random Totals: | 17,019,777,190 | 17,764,062,825 | 370 | 50,537 | ||
| Catg D1 Exception Values: | 6,359 | 7,422 | ||||
| Total Test Values (4): | 17,019,783,549 | 17,764,070,247 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 888,203,512 |
Confidence Interval Values (5)
| State Lower Limit: | 16,875,866,735 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 17,019,783,549 | (Within Confidence Interval) |
| State Upper Limit: | 18,652,273,759 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 17,419,956,054 | (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