2010 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 | 26,077,455 | 0.9277 | 28,109,793 | 16 | 419 | .017286231 |
| A | 25,018,483 | 0.9025 | 27,721,311 | 17 | 241 | .016213069 |
| A | 21,325,108 | 0.9267 | 23,011,879 | 17 | 155 | .014243767 |
| A | 24,688,952 | 0.9739 | 25,350,603 | 16 | 123 | .008506614 |
| D3 | 49,150,829 | 0.9817 | 50,067,056 | 20 | 1,508 | .093921751 |
| Random Totals: | 146,260,827 | 154,260,642 | 86 | 2,446 | ||
| Catg J Exception Values: | 2,657,410 | 2,450,726 | ||||
| Catg D1 Exception Values: | 3,455,428 | 2,630,748 | ||||
| Total Test Values (4): | 152,373,665 | 159,342,116 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 7,967,106 |
Confidence Interval Values (5)
| State Lower Limit: | 151,375,010 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 152,373,665 | (Within Confidence Interval) |
| State Upper Limit: | 167,309,222 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 157,193,816 | (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