2009 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 | 11,385,653 | 0.9600 | 11,860,055 | 7 | 786 | .004255609 |
| A | 11,519,776 | 0.9454 | 12,185,081 | 9 | 465 | .007157273 |
| A | 13,032,530 | 0.9374 | 13,902,848 | 7 | 358 | .006156917 |
| A | 11,999,862 | 0.8998 | 13,336,144 | 7 | 172 | .021721443 |
| D3 | 26,842,622 | 1.0212 | 26,285,372 | 25 | 2,178 | .086260020 |
| F1 | 3,487,620 | 0.9352 | 3,729,277 | 7 | 82 | .012922642 |
| F1 | 3,323,424 | 0.9163 | 3,627,004 | 6 | 27 | .008771693 |
| F1 | 3,378,359 | 0.9298 | 3,633,425 | 4 | 9 | .001255111 |
| G1 | 9,150,746 | 1.0096 | 9,063,734 | 17 | 41 | .024496604 |
| G1 | 9,989,562 | 1.0421 | 9,585,992 | 13 | 14 | .011920678 |
| Random Totals: | 104,110,154 | 107,208,932 | 102 | 4,132 | ||
| Catg J Exception Values: | 8,609,939 | 8,950,147 | ||||
| Catg D1 Exception Values: | 27,726,687 | 33,644,527 | ||||
| Catg F1 Exception Values: | 3,164,461 | 3,191,339 | ||||
| Catg G1 Exception Values: | 16,746,090 | 15,914,678 | ||||
| Total Test Values (4): | 160,357,331 | 168,909,623 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 8,445,481 |
Confidence Interval Values (5)
| Local Test Value: | 160,357,331 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 160,464,142 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 177,355,104 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 186,006,870 | (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