2007 Confidence Interval Detail
246/Williamson
246-912/Thrall ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 11,803,887 | 0.8952 | 13,185,754 | 8 | 207 | .020460372 |
| A | 11,845,660 | 0.9660 | 12,262,588 | 8 | 128 | .009401411 |
| A | 11,743,693 | 1.0096 | 11,632,026 | 7 | 97 | .006161901 |
| A | 11,784,303 | 0.9730 | 12,111,308 | 7 | 58 | .010963841 |
| D3 | 58,441,344 | 0.9552 | 61,182,312 | 17 | 2,379 | .015439436 |
| Random Totals: | 105,618,887 | 110,373,988 | 47 | 2,869 | ||
| Catg J Exception Values: | 9,401,077 | 9,253,332 | ||||
| Catg D1 Exception Values: | 16,279,828 | 16,291,185 | ||||
| Total Test Values (4): | 131,299,792 | 135,918,505 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 6,795,925 |
Confidence Interval Values (5)
| State Lower Limit: | 129,122,580 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 131,299,792 | (Within Confidence Interval) |
| State Upper Limit: | 142,714,430 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 135,476,319 | (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