2009 Confidence Interval Detail
025/Brown
025-906/Zephyr ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,158,100 | 1.0087 | 1,148,111 | 9 | 46 | .010553124 |
| A | 1,205,850 | 1.0372 | 1,162,601 | 8 | 27 | .008525251 |
| A | 1,270,070 | 0.9855 | 1,288,757 | 7 | 19 | .003072292 |
| A | 1,084,000 | 1.0176 | 1,065,252 | 7 | 10 | .004339016 |
| D3 | 17,829,499 | 1.0000 | 17,829,499 | 35 | 770 | .075397345 |
| Random Totals: | 22,547,519 | 22,494,220 | 66 | 872 | ||
| Catg J Exception Values: | 6,690,640 | 6,740,779 | ||||
| Catg D1 Exception Values: | 2,960,620 | 3,004,555 | ||||
| Total Test Values (4): | 32,198,779 | 32,239,554 |
Margin of Error
| Margin of Error Percent: | 5.0269988 |
|---|---|
| Margin of Error Value: | 1,620,682 |
Confidence Interval Values (5)
| State Lower Limit: | 30,618,872 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 32,198,779 | (Within Confidence Interval) |
| State Upper Limit: | 33,860,236 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 31,320,138 | (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