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Rockwall County
2024 Confidence Interval Detail
Rockwall County
199-901/Rockwall ISD
Category Summary
| (1) Category |
(1) Stratum Number |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|---|
| A | 2 | 3,605,826,132 | 0.9935 | 3,629,417,345 | 146 | 9,695 | 0.012637084 |
| A | 3 | 3,627,848,765 | 1.0037 | 3,614,475,207 | 142 | 7,425 | 0.008487713 |
| A | 4 | 3,889,573,715 | 1.0142 | 3,835,115,081 | 148 | 5,974 | 0.009117754 |
| A | 5 | 4,613,067,756 | 1.0165 | 4,538,187,660 | 145 | 4,076 | 0.009015522 |
| B | 0 | 378,009,546 | 0.7172 | 527,062,948 | 9 | 50 | 0.407034210 |
| C1 | 2 | 168,347,075 | 0.8587 | 196,048,766 | 15 | 1,578 | 0.143507671 |
| C1 | 3 | 116,029,725 | 0.9236 | 125,627,680 | 29 | 405 | 0.038072600 |
| C1 | 4 | 143,712,312 | 0.8477 | 169,532,042 | 10 | 188 | 0.097301631 |
| C1 | 5 | 193,848,414 | 1.0574 | 183,325,529 | 9 | 84 | 0.003293249 |
| E | 0 | 490,596,812 | 0.9572 | 512,533,234 | 10 | 807 | 0.006768237 |
| F1 | 2 | 513,537,682 | 0.9973 | 514,927,988 | 11 | 445 | 0.009251656 |
| F1 | 3 | 522,826,214 | 0.9907 | 527,734,142 | 11 | 153 | 0.037677075 |
| F1 | 4 | 483,542,057 | 1.0542 | 458,681,519 | 9 | 58 | 0.009812771 |
| F1 | 5 | 631,916,990 | 1.0043 | 629,211,381 | 6 | 21 | 0.009146672 |
| L1 | 2 | 141,629,094 | 0.9508 | 148,957,819 | 10 | 616 | 0.009243546 |
| L1 | 3 | 156,474,462 | 0.9270 | 168,796,615 | 10 | 88 | 0.010258852 |
| L1 | 4 | 145,477,638 | 0.9274 | 156,866,118 | 7 | 16 | 0.029222965 |
| L1 | 5 | 165,044,926 | 0.9580 | 172,280,716 | 3 | 4 | 0.008910524 |
| Random Totals: | 19,987,309,315 | 20,108,781,790 | 730 | 31,683 | |||
| CATG D1 EXCEPTION VALUES: | 1,227,524 | 1,100,413 | |||||
| Total Test Values | 19,988,536,839 | 20,109,882,203 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,005,494,110 |
Confidence Interval Values(5)
| Local Test Value: | 19,988,536,839 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 19,104,388,093 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 21,115,376,313 | (State Test Value plus Margin of Error Percent) |
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, D2, E, F1, G1, G2, or L1 marked as exception properties
(5) Unstudied categories and sub-categories were not included in the Confidence Interval Values