2006 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 | 10,917,936 | 0.9670 | 11,290,523 | 11 | 201 | .003009522 |
| A | 10,931,431 | 0.9678 | 11,295,134 | 11 | 127 | .007667261 |
| A | 10,895,938 | 0.9953 | 10,947,391 | 8 | 95 | .014031927 |
| A | 10,857,417 | 0.9664 | 11,234,910 | 9 | 60 | .006024483 |
| D3 | 61,209,164 | 0.9433 | 64,888,332 | 20 | 2,356 | .005801364 |
| Random Totals: | 104,811,886 | 109,656,290 | 59 | 2,839 | ||
| Catg J Exception Values: | 9,788,895 | 9,175,098 | ||||
| Catg D1 Exception Values: | 16,259,235 | 16,455,640 | ||||
| Total Test Values (4): | 130,860,016 | 135,287,028 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 6,764,351 |
Confidence Interval Values (5)
| State Lower Limit: | 128,522,677 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 130,860,016 | (Within Confidence Interval) |
| State Upper Limit: | 142,051,379 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 130,833,919 | (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