2006 Confidence Interval Detail
246/Williamson
246-904/Georgetown ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 688,342,757 | 0.9619 | 715,607,399 | 57 | 5,174 | .006414740 |
| A | 688,090,712 | 0.9574 | 718,707,658 | 57 | 3,770 | .004968075 |
| A | 688,260,507 | 0.9741 | 706,560,422 | 57 | 2,768 | .004799535 |
| A | 688,036,804 | 0.9751 | 705,606,403 | 57 | 1,793 | .007320820 |
| F1 | 127,455,098 | 0.9224 | 138,177,686 | 10 | 398 | .022931144 |
| F1 | 126,474,576 | 0.9602 | 131,716,909 | 7 | 126 | .027990585 |
| F1 | 129,078,531 | 0.9737 | 132,564,990 | 7 | 44 | .011728992 |
| F1 | 124,734,223 | 1.0056 | 124,039,601 | 4 | 11 | .003506574 |
| Random Totals: | 3,260,473,208 | 3,372,981,068 | 256 | 14,084 | ||
| Catg D1 Exception Values: | 10,139,111 | 10,043,926 | ||||
| Total Test Values (4): | 3,270,612,319 | 3,383,024,994 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 169,151,250 |
Confidence Interval Values (5)
| State Lower Limit: | 3,213,873,744 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,270,612,319 | (Within Confidence Interval) |
| State Upper Limit: | 3,552,176,244 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 3,857,905,273 | (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