2008 Confidence Interval Detail
253/Zapata
253-901/Zapata ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 34,487,316 | 0.8775 | 39,301,785 | 7 | 1,639 | .114995136 |
| A | 46,441,116 | 0.9664 | 48,055,791 | 8 | 1,169 | .051403195 |
| A | 50,137,595 | 1.0060 | 49,838,564 | 7 | 757 | .039069081 |
| A | 68,021,110 | 0.8758 | 77,667,401 | 7 | 504 | .009802639 |
| G1 | 692,090,520 | 1.0096 | 685,509,628 | 18 | 951 | .076099592 |
| G1 | 693,075,967 | 1.0443 | 663,675,158 | 17 | 378 | .019322677 |
| G1 | 693,766,433 | 1.0858 | 638,944,956 | 15 | 205 | .105363920 |
| G1 | 686,540,544 | 1.4256 | 481,580,067 | 15 | 87 | .677349265 |
| Random Totals: | 2,964,560,601 | 2,684,573,350 | 94 | 5,690 | ||
| Catg D1 Exception Values: | 25,878,988 | 48,581,604 | ||||
| Total Test Values (4): | 2,990,439,589 | 2,733,154,954 |
Margin of Error
| Margin of Error Percent: | 8.5360368 |
|---|---|
| Margin of Error Value: | 233,303,113 |
Confidence Interval Values (5)
| State Lower Limit: | 2,499,851,841 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| State Upper Limit: | 2,966,458,067 | (State Test Value plus Margin of Error Percent) |
| Local Test Value: | 2,990,439,589 | (Outside Confidence Interval) |
| Value Assigned (6): | 3,438,582,875 | (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