2007 Confidence Interval Detail
254/Zavala
254-901/Crystal City ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 11,293,196 | 0.9839 | 11,477,992 | 11 | 807 | .008458922 |
| A | 11,285,831 | 0.9172 | 12,304,657 | 11 | 471 | .008692125 |
| A | 11,294,875 | 0.8925 | 12,655,322 | 12 | 324 | .025360201 |
| A | 11,239,112 | 1.0050 | 11,183,196 | 9 | 171 | .004840701 |
| D3 | 24,099,392 | 1.2283 | 19,620,119 | 18 | 2,178 | .035870955 |
| F1 | 3,306,918 | 0.9567 | 3,456,588 | 6 | 75 | .003610463 |
| F1 | 3,227,443 | 0.9403 | 3,432,355 | 5 | 25 | .008822765 |
| F1 | 3,716,984 | 1.0058 | 3,695,550 | 5 | 10 | .001743789 |
| G1 | 12,411,220 | 1.0068 | 12,327,394 | 9 | 24 | .027228857 |
| G1 | 11,168,454 | 1.0337 | 10,804,347 | 5 | 9 | .005498736 |
| G1 | 15,144,978 | 0.9976 | 15,181,413 | 3 | 5 | .000098799 |
| Random Totals: | 118,188,403 | 116,138,933 | 94 | 4,099 | ||
| Catg J Exception Values: | 8,856,961 | 8,895,437 | ||||
| Catg D1 Exception Values: | 27,675,153 | 29,022,759 | ||||
| Catg F1 Exception Values: | 2,529,651 | 2,496,422 | ||||
| Catg G1 Exception Values: | 29,333,597 | 28,189,357 | ||||
| Total Test Values (4): | 186,583,765 | 184,742,908 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 9,237,145 |
Confidence Interval Values (5)
| State Lower Limit: | 175,505,763 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 186,583,765 | (Within Confidence Interval) |
| State Upper Limit: | 193,980,053 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 240,725,821 | (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