2009 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 | 21,488,660 | 0.9219 | 23,309,101 | 9 | 373 | .115930088 |
| A | 24,195,550 | 0.8391 | 28,835,121 | 7 | 218 | .058941784 |
| A | 22,321,320 | 1.0911 | 20,457,630 | 8 | 134 | .032173437 |
| A | 21,886,240 | 1.0817 | 20,233,188 | 6 | 71 | .006033447 |
| C | 4,530,460 | 0.8798 | 5,149,420 | 8 | 373 | .099479927 |
| C | 5,436,040 | 0.6457 | 8,418,832 | 8 | 213 | .180616916 |
| C | 3,188,230 | 0.9573 | 3,330,440 | 7 | 65 | .009576152 |
| C | 3,895,310 | 0.9955 | 3,912,918 | 6 | 33 | .000002262 |
| D3 | 25,059,410 | 0.9953 | 25,177,745 | 11 | 2,474 | .000005699 |
| F1 | 2,987,200 | 0.9944 | 3,004,023 | 6 | 32 | .000090566 |
| F1 | 4,451,830 | 0.9906 | 4,494,074 | 5 | 22 | .000291571 |
| F1 | 3,038,730 | 0.9821 | 3,094,115 | 4 | 8 | .000970738 |
| F1 | 4,154,600 | 0.9865 | 4,211,455 | 3 | 6 | .000192212 |
| Random Totals: | 146,633,580 | 153,628,062 | 88 | 4,022 | ||
| Catg D1 Exception Values: | 13,372,760 | 16,639,067 | ||||
| Total Test Values (4): | 160,006,340 | 170,267,129 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 8,513,356 |
Confidence Interval Values (5)
| Local Test Value: | 160,006,340 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 161,753,773 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 178,780,485 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 175,028,326 | (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