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 | 2,328,879,108 | 0.9987 | 2,331,910,592 | 70 | 17,424 | .001221070 |
| A | 2,328,081,575 | 1.0018 | 2,323,898,558 | 73 | 12,666 | .001049010 |
| A | 2,327,386,318 | 0.9968 | 2,334,857,863 | 74 | 9,496 | .000742199 |
| A | 2,327,998,053 | 0.9911 | 2,348,903,292 | 70 | 5,965 | .002834902 |
| B | 313,913,804 | 0.9157 | 342,812,934 | 10 | 663 | .096965260 |
| B | 313,360,783 | 0.9307 | 336,693,653 | 6 | 58 | .022203279 |
| B | 323,996,768 | 0.8912 | 363,551,131 | 6 | 29 | .006059241 |
| B | 302,250,261 | 0.9253 | 326,651,098 | 6 | 11 | .007504278 |
| F1 | 1,132,158,131 | 0.8610 | 1,314,933,950 | 11 | 814 | .072943694 |
| F1 | 1,131,025,137 | 0.8693 | 1,301,075,736 | 11 | 242 | .031402835 |
| F1 | 1,148,043,747 | 0.8364 | 1,372,601,324 | 10 | 83 | .012963748 |
| F1 | 1,107,592,752 | 0.9841 | 1,125,488,011 | 7 | 17 | .009400010 |
| L1 | 329,688,144 | 1.2058 | 273,418,597 | 7 | 2,291 | .008478365 |
| L1 | 330,468,127 | 1.0062 | 328,431,850 | 7 | 333 | .039079241 |
| L1 | 335,851,886 | 1.0652 | 315,294,673 | 7 | 97 | .012759137 |
| L1 | 322,611,649 | 1.0289 | 313,550,052 | 6 | 18 | .016835245 |
| Random Totals: | 16,403,306,243 | 17,054,073,314 | 381 | 50,207 | ||
| Catg D1 Exception Values: | 8,404 | 9,837 | ||||
| Total Test Values (4): | 16,403,314,647 | 17,054,083,151 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 852,704,158 |
Confidence Interval Values (5)
| State Lower Limit: | 16,201,378,993 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 16,403,314,647 | (Within Confidence Interval) |
| State Upper Limit: | 17,906,787,309 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 17,237,801,052 | (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