2011 Confidence Interval Detail
228/Trinity
228-904/Centerville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 763,427 | 0.9413 | 811,035 | 10 | 31 | .018688379 |
| A | 1,218,560 | 1.0559 | 1,154,049 | 11 | 25 | .002238465 |
| A | 1,607,888 | 1.0757 | 1,494,736 | 12 | 22 | .006179031 |
| D3 | 13,703,443 | 0.9257 | 14,803,330 | 19 | 1,207 | .257955427 |
| G1 | 486,044 | 0.9293 | 523,022 | 4 | 6 | .053509832 |
| Random Totals: | 17,779,362 | 18,786,172 | 56 | 1,291 | ||
| Catg D1 Exception Values: | 7,746,387 | 7,469,513 | ||||
| Catg A Exception Values: | 1,621,547 | 1,575,899 | ||||
| Catg G1 Exception Values: | 6,988,395 | 6,911,047 | ||||
| Total Test Values (4): | 34,135,691 | 34,742,631 |
Margin of Error
| Margin of Error Percent: | 9.8807399 |
|---|---|
| Margin of Error Value: | 3,432,829 |
Confidence Interval Values (5)
| State Lower Limit: | 31,309,802 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 34,135,691 | (Within Confidence Interval) |
| State Upper Limit: | 38,175,460 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 29,224,837 | (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