2008 Confidence Interval Detail
070/Ellis
070-905/Ferris ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 48,276,514 | 1.0059 | 47,993,353 | 15 | 1,036 | .019382302 |
| A | 48,919,897 | 1.0483 | 46,665,932 | 17 | 540 | .008446068 |
| A | 51,823,437 | 0.9896 | 52,368,065 | 15 | 390 | .001165074 |
| A | 54,648,492 | 1.0049 | 54,382,020 | 19 | 272 | .000962137 |
| D3 | 44,719,123 | 1.0134 | 44,127,810 | 40 | 1,532 | .008669361 |
| F1 | 5,394,154 | 0.9937 | 5,428,353 | 6 | 57 | .003042634 |
| F1 | 4,365,300 | 0.9406 | 4,640,974 | 5 | 16 | .004998494 |
| F1 | 4,909,730 | 0.9832 | 4,993,623 | 6 | 5 | .017399168 |
| Random Totals: | 263,056,647 | 260,600,130 | 123 | 3,848 | ||
| Catg D1 Exception Values: | 5,340,358 | 4,872,864 | ||||
| Total Test Values (4): | 268,397,005 | 265,472,994 |
Margin of Error
| Margin of Error Percent: | 5.0000001 |
|---|---|
| Margin of Error Value: | 13,273,650 |
Confidence Interval Values (5)
| State Lower Limit: | 252,199,344 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 268,397,005 | (Within Confidence Interval) |
| State Upper Limit: | 278,746,644 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 303,075,813 | (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