2010 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 | 2,337,121,540 | 0.9684 | 2,413,384,490 | 75 | 17,507 | .006683305 |
| A | 2,307,314,860 | 0.9632 | 2,395,468,086 | 76 | 12,092 | .008449652 |
| A | 2,405,318,460 | 0.9575 | 2,512,081,943 | 74 | 9,258 | .004423398 |
| A | 2,454,094,420 | 0.9705 | 2,528,690,799 | 75 | 5,977 | .009301616 |
| B | 308,276,320 | 1.0240 | 301,051,094 | 20 | 580 | .006655728 |
| B | 295,984,030 | 0.9298 | 318,330,856 | 8 | 55 | .041017876 |
| B | 289,987,490 | 0.9617 | 301,536,331 | 7 | 22 | .007641430 |
| B | 204,718,180 | 0.9793 | 209,045,420 | 5 | 8 | .002689841 |
| F1 | 1,087,985,000 | 0.9937 | 1,094,882,761 | 12 | 839 | .002207800 |
| F1 | 947,984,510 | 0.9799 | 967,429,850 | 10 | 220 | .018926742 |
| F1 | 932,405,390 | 0.9210 | 1,012,383,702 | 9 | 84 | .007033741 |
| F1 | 988,906,630 | 0.8869 | 1,115,014,804 | 7 | 22 | .056250678 |
| L1 | 354,257,800 | 1.1174 | 317,037,587 | 10 | 2,122 | .010306468 |
| L1 | 359,374,910 | 1.0950 | 328,196,265 | 10 | 325 | .014149173 |
| L1 | 305,956,920 | 1.0330 | 296,182,885 | 9 | 84 | .007759184 |
| L1 | 319,745,390 | 0.9672 | 330,588,699 | 6 | 17 | .001264154 |
| Random Totals: | 15,899,431,850 | 16,441,305,572 | 413 | 49,212 | ||
| Catg J Exception Values: | 169,403,428 | 211,448,503 | ||||
| Catg D1 Exception Values: | 8,663 | 10,580 | ||||
| Total Test Values (4): | 16,068,843,941 | 16,652,764,655 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 832,638,233 |
Confidence Interval Values (5)
| State Lower Limit: | 15,820,126,422 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 16,068,843,941 | (Within Confidence Interval) |
| State Upper Limit: | 17,485,402,888 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 16,231,882,941 | (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