2008 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 | 17,546,290 | 0.8230 | 21,319,915 | 13 | 334 | .051140957 |
| A | 19,356,280 | 0.9091 | 21,291,695 | 13 | 195 | .010555526 |
| A | 23,707,910 | 0.9597 | 24,703,459 | 13 | 159 | .012794894 |
| A | 26,397,120 | 0.9708 | 27,191,100 | 16 | 95 | .000253204 |
| C | 3,213,400 | 0.6422 | 5,003,737 | 9 | 339 | .219893792 |
| C | 3,427,280 | 0.7293 | 4,699,410 | 13 | 197 | .263442679 |
| C | 4,304,280 | 0.8907 | 4,832,469 | 7 | 114 | .070449395 |
| C | 5,305,400 | 0.8278 | 6,409,036 | 7 | 57 | .015551902 |
| D3 | 23,678,270 | 0.9684 | 24,450,919 | 18 | 2,393 | .000209895 |
| F1 | 3,174,170 | 0.9843 | 3,224,799 | 6 | 34 | .001193017 |
| F1 | 3,419,480 | 0.9736 | 3,512,202 | 5 | 19 | .000294836 |
| F1 | 4,721,820 | 0.9757 | 4,839,418 | 4 | 13 | .000006655 |
| F1 | 2,995,630 | 0.9890 | 3,028,948 | 3 | 4 | .000039066 |
| Random Totals: | 141,247,330 | 154,507,107 | 127 | 3,953 | ||
| Catg J Exception Values: | 7,788,360 | 7,393,261 | ||||
| Catg D1 Exception Values: | 13,363,020 | 15,303,864 | ||||
| Total Test Values (4): | 162,398,710 | 177,204,232 |
Margin of Error
| Margin of Error Percent: | 5.0000002 |
|---|---|
| Margin of Error Value: | 8,860,212 |
Confidence Interval Values (5)
| Local Test Value: | 162,398,710 | (Outside Confidence Interval) |
|---|---|---|
| State Lower Limit: | 168,344,020 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 186,064,444 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 178,650,448 | (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