2009 Confidence Interval Detail
014/Bell
014-910/Troy ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 26,748,226 | 0.8799 | 30,399,166 | 8 | 433 | .042643498 |
| A | 26,433,737 | 0.9095 | 29,064,032 | 8 | 279 | .012751456 |
| A | 26,900,488 | 0.9996 | 26,911,253 | 7 | 211 | .055332738 |
| A | 25,288,897 | 0.9635 | 26,246,909 | 7 | 140 | .023180961 |
| D3 | 81,537,780 | 0.9841 | 82,855,177 | 22 | 2,306 | .103700145 |
| Random Totals: | 186,909,128 | 195,476,537 | 52 | 3,369 | ||
| Catg J Exception Values: | 21,966,606 | 21,870,010 | ||||
| Catg D1 Exception Values: | 9,822,275 | 8,578,015 | ||||
| Total Test Values (4): | 218,698,009 | 225,924,562 |
Margin of Error
| Margin of Error Percent: | 6.0276018 |
|---|---|
| Margin of Error Value: | 13,617,833 |
Confidence Interval Values (5)
| State Lower Limit: | 212,306,729 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 218,698,009 | (Within Confidence Interval) |
| State Upper Limit: | 239,542,395 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 228,175,589 | (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