2006 Confidence Interval Detail
072/Erath
072-910/Morgan Mill ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,347,355 | 0.9309 | 1,447,368 | 7 | 36 | .025333127 |
| A | 1,274,900 | 0.9410 | 1,354,835 | 8 | 21 | .036007833 |
| A | 1,312,164 | 0.9589 | 1,368,405 | 7 | 16 | .027924196 |
| A | 1,056,421 | 0.8882 | 1,189,395 | 6 | 8 | .019240622 |
| D3 | 31,823,980 | 0.9517 | 33,439,088 | 22 | 1,026 | .105886346 |
| G1 | 2,329,390 | 1.1095 | 2,099,495 | 5 | 20 | .002522722 |
| G1 | 2,167,470 | 1.0419 | 2,080,305 | 4 | 9 | .021473994 |
| G1 | 2,143,260 | 1.0166 | 2,108,263 | 3 | 6 | .014006489 |
| G1 | 2,100,970 | 1.1311 | 1,857,457 | 3 | 4 | .005229996 |
| Random Totals: | 45,555,910 | 46,944,611 | 65 | 1,146 | ||
| Catg J Exception Values: | 1,372,500 | 1,556,258 | ||||
| Catg D1 Exception Values: | 4,481,820 | 3,760,825 | ||||
| Total Test Values (4): | 51,410,230 | 52,261,694 |
Margin of Error
| Margin of Error Percent: | 8.8182484 |
|---|---|
| Margin of Error Value: | 4,608,566 |
Confidence Interval Values (5)
| State Lower Limit: | 47,653,128 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 51,410,230 | (Within Confidence Interval) |
| State Upper Limit: | 56,870,260 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 49,792,565 | (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