2006 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 | 1,074,463 | 1.0255 | 1,047,745 | 7 | 54 | .064864802 |
| A | 1,063,047 | 0.9601 | 1,107,225 | 7 | 31 | .002314800 |
| A | 1,134,751 | 0.9867 | 1,150,047 | 8 | 20 | .003704967 |
| A | 994,970 | 0.9585 | 1,038,049 | 6 | 10 | .001370588 |
| D3 | 7,516,023 | 0.8015 | 9,377,446 | 13 | 1,154 | .341186811 |
| Random Totals: | 11,783,254 | 13,720,512 | 41 | 1,269 | ||
| Catg D1 Exception Values: | 7,632,564 | 7,290,226 | ||||
| Catg G1 Exception Values: | 7,392,739 | 7,463,618 | ||||
| Total Test Values (4): | 26,808,557 | 28,474,356 |
Margin of Error
| Margin of Error Percent: | 10.7659257 |
|---|---|
| Margin of Error Value: | 3,065,528 |
Confidence Interval Values (5)
| State Lower Limit: | 25,408,828 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 26,808,557 | (Within Confidence Interval) |
| State Upper Limit: | 31,539,884 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 22,785,969 | (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