2011 Confidence Interval Detail
122/Jeff Davis
122-901/Fort Davis ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 23,508,200 | 0.9193 | 25,571,848 | 13 | 388 | .016655318 |
| A | 21,881,690 | 0.9339 | 23,430,442 | 14 | 195 | .031384170 |
| A | 21,854,780 | 0.9128 | 23,942,572 | 16 | 129 | .023348861 |
| A | 21,967,950 | 1.0365 | 21,194,356 | 13 | 72 | .006006841 |
| C | 3,983,830 | 0.7272 | 5,478,314 | 10 | 318 | .021193322 |
| C | 4,207,600 | 0.7775 | 5,411,704 | 12 | 181 | .028540425 |
| C | 4,419,800 | 0.9483 | 4,660,761 | 11 | 98 | .040545143 |
| C | 3,744,790 | 0.8868 | 4,222,812 | 10 | 33 | .022260955 |
| D3 | 24,667,520 | 0.9786 | 25,206,949 | 25 | 2,504 | .001249463 |
| F1 | 3,701,150 | 0.9977 | 3,709,682 | 8 | 35 | .016571417 |
| F1 | 3,468,180 | 0.8810 | 3,936,640 | 10 | 16 | .100663584 |
| F1 | 4,318,110 | 0.7155 | 6,035,094 | 5 | 11 | .134250216 |
| F1 | 2,501,050 | 0.9941 | 2,515,894 | 3 | 3 | .004870400 |
| Random Totals: | 144,224,650 | 155,317,068 | 150 | 3,983 | ||
| Catg D1 Exception Values: | 13,368,460 | 12,935,291 | ||||
| Total Test Values (4): | 157,593,110 | 168,252,359 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 8,412,618 |
Confidence Interval Values (5)
| Local Test Value: | 157,593,110 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 159,839,741 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 176,664,977 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 175,480,374 | (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