2008 Confidence Interval Detail
246/Williamson
246-909/Round Rock ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,172,214,631 | 1.0097 | 2,151,346,569 | 25 | 15,414 | .003907370 |
| A | 2,647,387,235 | 0.9755 | 2,713,877,227 | 25 | 13,858 | .009583261 |
| A | 2,223,942,307 | 1.0277 | 2,163,999,520 | 25 | 8,629 | .002464594 |
| A | 1,624,868,218 | 0.9848 | 1,649,947,419 | 25 | 4,358 | .005515160 |
| B | 355,232,810 | 1.0093 | 351,959,586 | 26 | 1,822 | .007499630 |
| B | 391,661,850 | 0.9744 | 401,951,817 | 7 | 49 | .002820448 |
| B | 286,835,585 | 1.0262 | 279,512,361 | 5 | 14 | .003443629 |
| B | 445,450,000 | 0.9505 | 468,648,080 | 5 | 13 | .002409638 |
| C | 113,487,505 | 1.0574 | 107,326,939 | 14 | 1,793 | .234611812 |
| C | 110,779,902 | 1.0216 | 108,437,649 | 9 | 164 | .008562041 |
| C | 108,727,628 | 0.9733 | 111,710,293 | 7 | 64 | .001973223 |
| C | 159,344,292 | 1.0011 | 159,169,206 | 6 | 28 | .000603834 |
| F1 | 804,278,298 | 1.0079 | 797,974,301 | 12 | 668 | .022656532 |
| F1 | 765,804,105 | 0.8528 | 897,987,928 | 7 | 157 | .031606044 |
| F1 | 670,798,591 | 1.0043 | 667,926,507 | 6 | 50 | .001125050 |
| F1 | 734,613,990 | 0.9844 | 746,255,577 | 5 | 13 | .002052243 |
| L1 | 209,337,524 | 1.0854 | 192,866,707 | 7 | 1,218 | .051693149 |
| L1 | 200,524,999 | 1.0051 | 199,507,511 | 7 | 218 | .004569759 |
| L1 | 156,025,884 | 1.0348 | 150,778,782 | 6 | 45 | .027199218 |
| L1 | 204,047,339 | 1.0071 | 202,608,816 | 6 | 16 | .009757863 |
| Random Totals: | 14,385,362,693 | 14,523,792,795 | 235 | 48,591 | ||
| Catg D1 Exception Values: | 1,713,878 | 1,367,697 | ||||
| Total Test Values (4): | 14,387,076,571 | 14,525,160,492 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 726,258,025 |
Confidence Interval Values (5)
| State Lower Limit: | 13,798,902,467 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 14,387,076,571 | (Within Confidence Interval) |
| State Upper Limit: | 15,251,418,517 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 14,972,590,137 | (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