2006 Confidence Interval Detail
227/Travis
246-914/Coupland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 707,912 | 1.0980 | 644,729 | 3 | 4 | .002236502 |
| D3 | 2,610,828 | 1.0286 | 2,538,234 | 11 | 68 | .029120745 |
| Random Totals: | 3,318,740 | 3,182,963 | 14 | 72 | ||
| Catg J Exception Values: | 209,917 | 214,651 | ||||
| Catg D1 Exception Values: | 392,930 | 362,427 | ||||
| Total Test Values (4): | 3,921,587 | 3,760,041 |
Margin of Error
| Margin of Error Percent: | 6.9351637 |
|---|---|
| Margin of Error Value: | 260,765 |
Confidence Interval Values (5)
| State Lower Limit: | 3,499,276 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,921,587 | (Within Confidence Interval) |
| State Upper Limit: | 4,020,806 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,372,657 | (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