2009 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 | 28,246,489 | 0.9846 | 28,688,289 | 8 | 406 | .002203463 |
| A | 30,689,614 | 1.0630 | 28,870,756 | 8 | 293 | .014837575 |
| A | 29,349,502 | 0.9411 | 31,186,380 | 8 | 215 | .003042411 |
| A | 30,589,452 | 0.9999 | 30,592,511 | 10 | 158 | .000910195 |
| D3 | 44,892,506 | 0.8344 | 53,802,140 | 20 | 1,331 | .057466827 |
| F1 | 3,629,998 | 0.9017 | 4,025,727 | 7 | 30 | .012556705 |
| F1 | 3,132,149 | 0.8832 | 3,546,364 | 5 | 9 | .056488630 |
| F1 | 3,899,378 | 0.9970 | 3,911,111 | 3 | 7 | .000090862 |
| Random Totals: | 174,429,088 | 184,623,278 | 69 | 2,449 | ||
| Catg D1 Exception Values: | 5,998,332 | 4,962,638 | ||||
| Catg F1 Exception Values: | 3,093,266 | 3,426,116 | ||||
| Total Test Values (4): | 183,520,686 | 193,012,032 |
Margin of Error
| Margin of Error Percent: | 5.0000002 |
|---|---|
| Margin of Error Value: | 9,650,602 |
Confidence Interval Values (5)
| State Lower Limit: | 183,361,430 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 183,520,686 | (Within Confidence Interval) |
| State Upper Limit: | 202,662,634 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 186,225,880 | (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