2009 Confidence Interval Detail
246/Williamson
014-902/Bartlett ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 5,408,863 | 0.9847 | 5,492,904 | 8 | 134 | .010163614 |
| A | 4,915,400 | 0.8760 | 5,611,187 | 9 | 75 | .019675367 |
| A | 5,500,595 | 0.9491 | 5,795,591 | 8 | 59 | .011253034 |
| A | 5,944,954 | 0.9470 | 6,277,671 | 7 | 42 | .001573714 |
| D3 | 5,779,176 | 1.0221 | 5,654,218 | 17 | 419 | .023953267 |
| F1 | 774,776 | 0.8522 | 909,148 | 6 | 26 | .003059117 |
| F1 | 774,981 | 0.9926 | 780,759 | 5 | 13 | .006552066 |
| F1 | 1,143,685 | 0.9607 | 1,190,470 | 5 | 7 | .012082378 |
| Random Totals: | 30,242,430 | 31,711,948 | 65 | 775 | ||
| Catg J Exception Values: | 2,319,186 | 2,343,194 | ||||
| Catg D1 Exception Values: | 5,746,194 | 4,410,265 | ||||
| Catg F1 Exception Values: | 509,758 | 588,003 | ||||
| Total Test Values (4): | 38,817,568 | 39,053,410 |
Margin of Error
| Margin of Error Percent: | 5.0000013 |
|---|---|
| Margin of Error Value: | 1,952,671 |
Confidence Interval Values (5)
| State Lower Limit: | 37,100,739 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 38,817,568 | (Within Confidence Interval) |
| State Upper Limit: | 41,006,081 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 37,954,149 | (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