2007 Confidence Interval Detail
199/Rockwall
199-902/Royse City ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 148,191,042 | 1.1432 | 129,628,273 | 18 | 1,297 | .056993240 |
| A | 147,994,446 | 1.0118 | 146,268,478 | 26 | 914 | .007243507 |
| A | 148,146,610 | 1.0035 | 147,629,905 | 24 | 742 | .008841976 |
| A | 147,941,480 | 1.0737 | 137,786,607 | 25 | 505 | .010882306 |
| D3 | 125,677,521 | 1.0165 | 123,637,502 | 20 | 2,284 | .058621454 |
| Random Totals: | 717,951,099 | 684,950,765 | 113 | 5,742 | ||
| Catg J Exception Values: | 37,048,625 | 36,842,723 | ||||
| Catg D1 Exception Values: | 3,532,617 | 3,724,112 | ||||
| Total Test Values (4): | 758,532,341 | 725,517,600 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 36,275,880 |
Confidence Interval Values (5)
| State Lower Limit: | 689,241,720 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 758,532,341 | (Within Confidence Interval) |
| State Upper Limit: | 761,793,480 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 908,002,935 | (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