2007 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 | 1,100,204 | 0.9413 | 1,168,813 | 6 | 52 | .036248481 |
| A | 1,123,357 | 0.7845 | 1,431,940 | 6 | 31 | .008564615 |
| A | 1,126,684 | 0.7743 | 1,455,100 | 5 | 19 | .039808784 |
| A | 1,035,788 | 1.0525 | 984,122 | 6 | 10 | .029980390 |
| D3 | 7,992,718 | 0.8157 | 9,798,600 | 18 | 1,170 | .063203070 |
| Random Totals: | 12,378,751 | 14,838,575 | 41 | 1,282 | ||
| Catg D1 Exception Values: | 6,793,402 | 6,637,369 | ||||
| Catg G1 Exception Values: | 8,138,106 | 7,955,819 | ||||
| Total Test Values (4): | 27,310,259 | 29,431,763 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,471,588 |
Confidence Interval Values (5)
| Local Test Value: | 27,310,259 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 27,960,175 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 30,903,351 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 24,769,667 | (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