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 | 27,752,897 | 0.9231 | 30,064,887 | 8 | 424 | .032470062 |
| A | 27,691,778 | 0.9765 | 28,358,196 | 15 | 281 | .012256289 |
| A | 27,713,414 | 1.0020 | 27,658,098 | 19 | 198 | .004435244 |
| A | 27,695,790 | 0.9603 | 28,840,769 | 12 | 135 | .013608768 |
| D3 | 41,656,823 | 0.8331 | 50,002,188 | 25 | 1,312 | .316942955 |
| Random Totals: | 152,510,702 | 164,924,138 | 79 | 2,350 | ||
| Catg D1 Exception Values: | 6,669,721 | 5,035,042 | ||||
| Total Test Values (4): | 159,180,423 | 169,959,180 |
Margin of Error
| Margin of Error Percent: | 7.0576464 |
|---|---|
| Margin of Error Value: | 11,995,118 |
Confidence Interval Values (5)
| State Lower Limit: | 157,964,062 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 159,180,423 | (Within Confidence Interval) |
| State Upper Limit: | 181,954,298 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 177,493,340 | (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