2008 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 | 789,100,327 | 1.0036 | 786,269,756 | 25 | 5,563 | .007963986 |
| A | 923,968,223 | 1.0121 | 912,921,868 | 25 | 4,769 | .003790674 |
| A | 904,433,471 | 0.9907 | 912,923,661 | 25 | 3,437 | .006007309 |
| A | 1,091,733,247 | 0.9920 | 1,100,537,547 | 24 | 2,554 | .004755992 |
| F1 | 168,194,625 | 0.8561 | 196,466,096 | 12 | 453 | .051458240 |
| F1 | 201,100,417 | 0.8581 | 234,355,456 | 7 | 148 | .053715481 |
| F1 | 163,647,879 | 0.9955 | 164,387,623 | 6 | 38 | .003243649 |
| F1 | 274,620,613 | 1.0454 | 262,694,292 | 5 | 10 | .000951387 |
| Random Totals: | 4,516,798,802 | 4,570,556,299 | 129 | 16,972 | ||
| Catg D1 Exception Values: | 10,377,292 | 8,621,677 | ||||
| Total Test Values (4): | 4,527,176,094 | 4,579,177,976 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 228,958,899 |
Confidence Interval Values (5)
| State Lower Limit: | 4,350,219,077 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,527,176,094 | (Within Confidence Interval) |
| State Upper Limit: | 4,808,136,875 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 5,207,106,251 | (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