2011 Confidence Interval Detail
228/Trinity
228-901/Groveton ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 12,526,943 | 0.7279 | 17,209,703 | 11 | 633 | .197041630 |
| A | 14,274,508 | 0.8966 | 15,920,709 | 10 | 366 | .101185352 |
| A | 19,806,910 | 1.0133 | 19,546,936 | 11 | 312 | .145368458 |
| A | 23,974,424 | 1.0018 | 23,931,348 | 11 | 181 | .061224114 |
| C | 4,285,643 | 0.9212 | 4,652,239 | 11 | 1,339 | .222273163 |
| C | 3,976,912 | 1.1411 | 3,485,156 | 10 | 837 | .033458094 |
| C | 2,304,978 | 0.9207 | 2,503,506 | 9 | 382 | .024798269 |
| C | 13,214,815 | 0.8168 | 16,178,765 | 13 | 310 | .093464016 |
| D3 | 41,958,751 | 0.8999 | 46,626,015 | 21 | 3,663 | .158747544 |
| Random Totals: | 136,323,884 | 150,054,377 | 107 | 8,023 | ||
| Catg J Exception Values: | 34,246,090 | 31,579,585 | ||||
| Catg D1 Exception Values: | 29,237,065 | 28,238,851 | ||||
| Total Test Values (4): | 199,807,039 | 209,872,813 |
Margin of Error
| Margin of Error Percent: | 5.5317184 |
|---|---|
| Margin of Error Value: | 11,609,573 |
Confidence Interval Values (5)
| State Lower Limit: | 198,263,240 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 199,807,039 | (Within Confidence Interval) |
| State Upper Limit: | 221,482,386 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 235,428,570 | (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