2007 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 | 2,329,185,074 | 0.9987 | 2,332,216,956 | 70 | 17,424 | .001221070 |
| A | 2,328,387,436 | 1.0018 | 2,324,203,869 | 73 | 12,666 | .001049010 |
| A | 2,327,692,086 | 0.9968 | 2,335,164,613 | 74 | 9,496 | .000742199 |
| A | 2,328,303,902 | 0.9911 | 2,349,211,888 | 70 | 5,965 | .002834902 |
| B | 315,372,910 | 0.9157 | 344,406,367 | 10 | 663 | .096965260 |
| B | 314,817,319 | 0.9307 | 338,258,643 | 6 | 58 | .022203279 |
| B | 325,502,741 | 0.8912 | 365,240,957 | 6 | 29 | .006059241 |
| B | 303,655,154 | 0.9253 | 328,169,409 | 6 | 11 | .007504278 |
| F1 | 1,145,126,989 | 0.8610 | 1,329,996,503 | 11 | 814 | .072943694 |
| F1 | 1,143,981,016 | 0.8693 | 1,315,979,542 | 11 | 242 | .031402835 |
| F1 | 1,161,194,574 | 0.8364 | 1,388,324,455 | 10 | 83 | .012963748 |
| F1 | 1,120,280,213 | 0.9841 | 1,138,380,462 | 7 | 17 | .009400010 |
| L1 | 329,410,228 | 1.2058 | 273,188,114 | 7 | 2,291 | .008478365 |
| L1 | 330,189,553 | 1.0062 | 328,154,992 | 7 | 333 | .039079241 |
| L1 | 335,568,773 | 1.0652 | 315,028,889 | 7 | 97 | .012759137 |
| L1 | 322,339,698 | 1.0289 | 313,285,740 | 6 | 18 | .016835245 |
| Random Totals: | 16,461,007,666 | 17,119,211,399 | 381 | 50,207 | ||
| Catg D1 Exception Values: | 8,404 | 9,855 | ||||
| Total Test Values (4): | 16,461,016,070 | 17,119,221,254 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 855,961,063 |
Confidence Interval Values (5)
| State Lower Limit: | 16,263,260,191 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 16,461,016,070 | (Within Confidence Interval) |
| State Upper Limit: | 17,975,182,317 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 17,335,171,771 | (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