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Collin County
2020 Confidence Interval Detail
Collin County
043-908/Melissa ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 328,053,280 | 0.9703 | 338,094,692 | 75 | 1,403 | 0.001654131 |
| A | 352,829,425 | 0.9788 | 360,471,419 | 76 | 1,229 | 0.003843922 |
| A | 390,041,731 | 1.0020 | 389,263,205 | 75 | 1,146 | 0.002207422 |
| A | 374,068,257 | 0.9904 | 377,694,121 | 74 | 828 | 0.005918632 |
| E | 120,823,828 | 1.0032 | 120,438,425 | 10 | 369 | 0.010166098 |
| Random Totals: | 1,565,816,521 | 1,585,961,862 | 310 | 4,975 | ||
| CATG D1 EXCEPTION VALUES: | 1,459,923 | 1,021,704 | ||||
| Total Test Values | 1,567,276,444 | 1,586,983,566 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 79,349,178 |
Confidence Interval Values(5)
| Local Test Value: | 1,567,276,444 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 1,507,634,388 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 1,666,332,744 | (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