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Collin County
2020 Confidence Interval Detail
Collin County
043-903/Celina ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 268,042,951 | 0.9905 | 270,613,782 | 75 | 1,108 | 0.003051645 |
| A | 287,159,443 | 0.9981 | 287,706,085 | 81 | 916 | 0.002146645 |
| A | 276,159,392 | 0.9985 | 276,574,253 | 47 | 678 | 0.002658029 |
| A | 257,718,124 | 1.0278 | 250,747,348 | 33 | 422 | 0.006911170 |
| E | 338,730,430 | 0.9656 | 350,797,877 | 15 | 1,055 | 0.008452114 |
| Random Totals: | 1,427,810,340 | 1,436,439,345 | 251 | 4,179 | ||
| CATG D1 EXCEPTION VALUES: | 5,963,649 | 4,075,089 | ||||
| Total Test Values | 1,433,773,989 | 1,440,514,434 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 72,025,722 |
Confidence Interval Values(5)
| Local Test Value: | 1,433,773,989 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 1,368,488,712 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 1,512,540,156 | (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