2008 Confidence Interval Detail
091/Grayson
091-918/Tom Bean ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 22,903,179 | 0.7997 | 28,639,714 | 7 | 390 | .035446476 |
| A | 23,448,851 | 0.8907 | 26,326,318 | 8 | 247 | .052272599 |
| A | 23,535,924 | 0.9960 | 23,630,446 | 7 | 178 | .003840628 |
| A | 24,154,119 | 0.9700 | 24,901,154 | 7 | 122 | .011838672 |
| D3 | 43,264,525 | 1.0385 | 41,660,592 | 20 | 1,489 | .023036315 |
| Random Totals: | 137,306,598 | 145,158,224 | 49 | 2,426 | ||
| Catg D1 Exception Values: | 4,030,552 | 2,986,462 | ||||
| Total Test Values (4): | 141,337,150 | 148,144,686 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 7,407,234 |
Confidence Interval Values (5)
| State Lower Limit: | 140,737,452 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 141,337,150 | (Within Confidence Interval) |
| State Upper Limit: | 155,551,920 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 136,969,154 | (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