2007 Confidence Interval Detail
091/Grayson
091-905/Howe ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 27,787,183 | 0.9231 | 30,102,029 | 8 | 424 | .032470062 |
| A | 27,725,989 | 0.9765 | 28,393,230 | 15 | 281 | .012256289 |
| A | 27,747,652 | 1.0020 | 27,692,267 | 19 | 198 | .004435244 |
| A | 27,730,006 | 0.9603 | 28,876,399 | 12 | 135 | .013608768 |
| D3 | 41,569,129 | 0.8331 | 49,896,926 | 25 | 1,310 | .316942955 |
| Random Totals: | 152,559,959 | 164,960,851 | 79 | 2,348 | ||
| Catg D1 Exception Values: | 6,669,721 | 5,037,935 | ||||
| Total Test Values (4): | 159,229,680 | 169,998,786 |
Margin of Error
| Margin of Error Percent: | 7.0444080 |
|---|---|
| Margin of Error Value: | 11,975,408 |
Confidence Interval Values (5)
| State Lower Limit: | 158,023,378 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 159,229,680 | (Within Confidence Interval) |
| State Upper Limit: | 181,974,194 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 176,807,734 | (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