2007 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 | 39,241,523 | 0.8822 | 44,481,436 | 7 | 1,864 | .078890730 |
| A | 39,274,200 | 0.8409 | 46,704,959 | 7 | 982 | .007885962 |
| A | 39,235,331 | 0.8262 | 47,488,902 | 7 | 587 | .005546373 |
| A | 39,197,282 | 0.9160 | 42,791,793 | 7 | 311 | .016196519 |
| G1 | 647,054,567 | 1.0290 | 628,818,821 | 15 | 916 | .059379258 |
| G1 | 647,260,510 | 1.0315 | 627,494,435 | 15 | 349 | .092671397 |
| G1 | 645,316,800 | 0.9418 | 685,195,158 | 15 | 184 | .030887857 |
| G1 | 644,750,936 | 1.0957 | 588,437,470 | 15 | 85 | .045164987 |
| Random Totals: | 2,741,331,149 | 2,711,412,974 | 88 | 5,278 | ||
| Catg D1 Exception Values: | 26,144,169 | 47,336,012 | ||||
| Total Test Values (4): | 2,767,475,318 | 2,758,748,986 |
Margin of Error
| Margin of Error Percent: | 5.4196214 |
|---|---|
| Margin of Error Value: | 149,513,751 |
Confidence Interval Values (5)
| State Lower Limit: | 2,609,235,235 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 2,767,475,318 | (Within Confidence Interval) |
| State Upper Limit: | 2,908,262,737 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,156,456,653 | (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