2009 Confidence Interval Detail
246/Williamson
166-905/Thorndale ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,298,101 | 0.9611 | 2,391,115 | 10 | 18 | .005882739 |
| D3 | 8,533,908 | 0.9999 | 8,534,761 | 18 | 279 | .015769139 |
| Random Totals: | 10,832,009 | 10,925,876 | 28 | 297 | ||
| Catg J Exception Values: | 834,728 | 847,632 | ||||
| Catg D1 Exception Values: | 1,770,906 | 1,359,895 | ||||
| Total Test Values (4): | 13,437,643 | 13,133,403 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 656,670 |
Confidence Interval Values (5)
| State Lower Limit: | 12,476,733 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 13,437,643 | (Within Confidence Interval) |
| State Upper Limit: | 13,790,073 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 11,815,011 | (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