2010 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 | 1,000,213,780 | 0.9539 | 1,048,552,029 | 60 | 6,863 | .003130645 |
| A | 926,231,407 | 0.9721 | 952,814,944 | 59 | 4,594 | .005375649 |
| A | 944,145,567 | 0.9557 | 987,909,979 | 61 | 3,414 | .006340780 |
| A | 866,713,588 | 0.9674 | 895,920,600 | 60 | 1,938 | .008035579 |
| F1 | 207,546,030 | 0.9409 | 220,582,453 | 13 | 478 | .015361132 |
| F1 | 217,462,230 | 0.9939 | 218,796,891 | 9 | 133 | .001306895 |
| F1 | 179,027,993 | 0.9802 | 182,644,351 | 8 | 31 | .000301471 |
| F1 | 203,012,329 | 1.0088 | 201,241,405 | 3 | 5 | .000019772 |
| Random Totals: | 4,544,352,924 | 4,708,462,652 | 273 | 17,456 | ||
| Catg J Exception Values: | 33,914,320 | 30,826,226 | ||||
| Catg D1 Exception Values: | 11,863,494 | 10,178,618 | ||||
| Total Test Values (4): | 4,590,130,738 | 4,749,467,496 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 237,473,375 |
Confidence Interval Values (5)
| State Lower Limit: | 4,511,994,121 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,590,130,738 | (Within Confidence Interval) |
| State Upper Limit: | 4,986,940,871 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,302,577,646 | (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