2008 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 | 11,192,551 | 0.8581 | 13,043,411 | 8 | 788 | .027480244 |
| A | 11,159,855 | 0.7679 | 14,532,954 | 7 | 462 | .009027199 |
| A | 11,380,382 | 0.8994 | 12,653,304 | 8 | 327 | .025821493 |
| A | 12,738,243 | 0.9051 | 14,073,852 | 7 | 200 | .016160115 |
| D3 | 27,307,483 | 1.0911 | 25,027,480 | 10 | 2,169 | .151988559 |
| F1 | 3,477,266 | 0.8381 | 4,148,987 | 6 | 83 | .123203061 |
| F1 | 3,324,380 | 0.7877 | 4,220,363 | 6 | 26 | .031568187 |
| F1 | 3,378,377 | 0.9586 | 3,524,282 | 4 | 9 | .002400510 |
| G1 | 20,677,916 | 1.0630 | 19,452,414 | 6 | 39 | .051823189 |
| G1 | 22,104,711 | 1.2644 | 17,482,372 | 4 | 9 | .076507085 |
| G1 | 26,033,220 | 1.2991 | 20,039,427 | 3 | 4 | .491198725 |
| Random Totals: | 152,774,384 | 148,198,846 | 69 | 4,116 | ||
| Catg J Exception Values: | 8,873,339 | 8,706,637 | ||||
| Catg D1 Exception Values: | 28,019,932 | 30,682,715 | ||||
| Catg F1 Exception Values: | 3,100,723 | 3,162,592 | ||||
| Catg G1 Exception Values: | 11,926,564 | 11,452,501 | ||||
| Total Test Values (4): | 204,694,942 | 202,203,291 |
Margin of Error
| Margin of Error Percent: | 5.7777151 |
|---|---|
| Margin of Error Value: | 11,682,730 |
Confidence Interval Values (5)
| State Lower Limit: | 190,520,561 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 204,694,942 | (Within Confidence Interval) |
| State Upper Limit: | 213,886,021 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 221,746,964 | (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