2006 Confidence Interval Detail
189/Presidio
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 | 10,173,662 | 0.8789 | 11,575,449 | 7 | 385 | .028387694 |
| A | 10,152,135 | 0.6400 | 15,862,711 | 13 | 216 | .181077847 |
| A | 10,119,389 | 0.5460 | 18,533,679 | 18 | 144 | .157746263 |
| A | 10,107,308 | 0.8262 | 12,233,488 | 19 | 80 | .141709938 |
| D3 | 12,485,761 | 0.9271 | 13,467,545 | 20 | 4,757 | .018179698 |
| F1 | 2,470,671 | 0.4356 | 5,671,880 | 5 | 76 | .445446813 |
| F1 | 2,605,717 | 0.8212 | 3,173,060 | 9 | 30 | .110201928 |
| F1 | 4,799,186 | 0.9264 | 5,180,468 | 5 | 11 | .006113063 |
| Random Totals: | 62,913,829 | 85,698,280 | 96 | 5,699 | ||
| Catg J Exception Values: | 15,855,726 | 15,504,758 | ||||
| Catg D1 Exception Values: | 13,023,660 | 15,703,358 | ||||
| Total Test Values (4): | 91,793,215 | 116,906,396 |
Margin of Error
| Margin of Error Percent: | 5.4381310 |
|---|---|
| Margin of Error Value: | 6,357,523 |
Confidence Interval Values (5)
| Local Test Value: | 91,793,215 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 110,548,873 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 123,263,919 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 106,089,663 | (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