2007 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 | 815,748,550 | 1.0092 | 808,312,079 | 25 | 5,455 | .003317309 |
| A | 815,704,883 | 0.9982 | 817,175,799 | 25 | 3,945 | .009007630 |
| A | 816,050,805 | 0.9975 | 818,096,045 | 25 | 2,853 | .002357892 |
| A | 815,267,043 | 0.9898 | 823,668,461 | 25 | 1,831 | .004369024 |
| F1 | 159,615,267 | 0.9560 | 166,961,576 | 9 | 441 | .013498143 |
| F1 | 160,644,290 | 0.9155 | 175,471,644 | 8 | 131 | .021716015 |
| F1 | 166,313,626 | 1.0383 | 160,178,779 | 6 | 38 | .005038686 |
| F1 | 150,264,762 | 1.0057 | 149,413,107 | 4 | 7 | .002805269 |
| Random Totals: | 3,899,609,226 | 3,919,277,490 | 127 | 14,701 | ||
| Catg D1 Exception Values: | 9,880,424 | 9,548,286 | ||||
| Total Test Values (4): | 3,909,489,650 | 3,928,825,776 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 196,441,289 |
Confidence Interval Values (5)
| State Lower Limit: | 3,732,384,487 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 3,909,489,650 | (Within Confidence Interval) |
| State Upper Limit: | 4,125,267,065 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,512,696,679 | (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