2006 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 | 120,270,241 | 1.0071 | 119,422,342 | 48 | 1,092 | .005806173 |
| A | 120,169,386 | 0.9926 | 121,065,269 | 39 | 736 | .005320601 |
| A | 120,194,528 | 1.0531 | 114,134,012 | 40 | 580 | .005467131 |
| A | 120,089,593 | 1.0535 | 113,991,071 | 40 | 398 | .007097547 |
| C | 8,974,497 | 1.0020 | 8,956,584 | 7 | 484 | .006710237 |
| C | 5,479,869 | 0.9991 | 5,484,805 | 8 | 225 | .019342349 |
| C | 7,182,483 | 0.9750 | 7,366,649 | 7 | 179 | .008016339 |
| C | 7,174,863 | 0.9456 | 7,587,630 | 8 | 101 | .011125055 |
| D3 | 116,877,145 | 0.9964 | 117,299,423 | 18 | 2,238 | .008395506 |
| Random Totals: | 626,412,605 | 615,307,785 | 215 | 6,033 | ||
| Catg J Exception Values: | 32,847,624 | 35,622,259 | ||||
| Catg D1 Exception Values: | 3,543,390 | 3,799,939 | ||||
| Total Test Values (4): | 662,803,619 | 654,729,983 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 32,736,499 |
Confidence Interval Values (5)
| State Lower Limit: | 621,993,484 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 662,803,619 | (Within Confidence Interval) |
| State Upper Limit: | 687,466,482 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 756,179,730 | (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