2007 Confidence Interval Detail
091/Grayson
091-901/Bells ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 16,648,513 | 0.9463 | 17,593,272 | 15 | 323 | .038758271 |
| A | 16,603,785 | 0.9440 | 17,588,755 | 13 | 176 | .010196365 |
| A | 16,739,499 | 1.0278 | 16,286,728 | 13 | 125 | .005507903 |
| A | 16,486,688 | 1.0262 | 16,065,765 | 14 | 87 | .007086732 |
| D3 | 43,473,422 | 0.9671 | 44,952,354 | 28 | 1,674 | .060097758 |
| Random Totals: | 109,951,907 | 112,486,874 | 83 | 2,385 | ||
| Catg J Exception Values: | 5,462,704 | 5,473,265 | ||||
| Catg D1 Exception Values: | 3,555,942 | 2,319,551 | ||||
| Total Test Values (4): | 118,970,553 | 120,279,690 |
Margin of Error
| Margin of Error Percent: | 5.0000004 |
|---|---|
| Margin of Error Value: | 6,013,985 |
Confidence Interval Values (5)
| State Lower Limit: | 114,265,705 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 118,970,553 | (Within Confidence Interval) |
| State Upper Limit: | 126,293,675 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 126,857,056 | (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