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Presidio County
2019 Confidence Interval Detail
Presidio County
189-901/Marfa ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 35,060,120 | 0.5203 | 67,384,432 | 14 | 442 | 0.082949569 |
| A | 35,477,200 | 0.8791 | 40,356,273 | 15 | 254 | 0.078274070 |
| A | 29,873,340 | 0.8835 | 33,812,496 | 14 | 142 | 0.081794275 |
| A | 35,865,995 | 0.9389 | 38,200,016 | 15 | 85 | 0.045219153 |
| E | 39,331,146 | 1.0668 | 36,868,341 | 20 | 645 | 0.791950593 |
| F1 | 9,912,963 | 0.9519 | 10,413,870 | 9 | 79 | 0.013144929 |
| F1 | 10,324,800 | 1.0098 | 10,224,599 | 8 | 30 | 0.003748470 |
| F1 | 9,334,256 | 0.9905 | 9,423,782 | 4 | 7 | 0.002608864 |
| Random Totals: | 205,179,820 | 246,683,809 | 99 | 1,684 | ||
| CATG D1 EXCEPTION VALUES: | 11,693,918 | 18,942,150 | ||||
| CATG F1 EXCEPTION VALUES: | 9,000,000 | 11,268,001 | ||||
| CATG J EXCEPTION VALUES: | 43,849,267 | 44,336,222 | ||||
| Total Test Values(3) | 269,723,005 | 321,230,182 |
Margin of Error
| Margin of Error Percent: | 6.0560233 |
|---|---|
| Margin of Error Value: | 19,453,775 |
Confidence Interval Values(5)
| Local Test Value: | 269,723,005 | OUTSIDE CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 301,776,407 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 340,683,957 | (State Test Value plus Margin of Error Percent) |
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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values