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Grayson County
2020 Confidence Interval Detail
Grayson County
091-918/Tom Bean ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 48,096,374 | 0.9337 | 51,511,593 | 13 | 430 | 0.026714992 |
| A | 57,902,743 | 0.9224 | 62,774,006 | 10 | 323 | 0.028431519 |
| A | 55,762,724 | 0.9465 | 58,914,658 | 12 | 230 | 0.014403182 |
| A | 67,070,682 | 1.0116 | 66,301,584 | 14 | 185 | 0.004417528 |
| E | 107,790,639 | 1.0157 | 106,124,485 | 18 | 541 | 0.006483949 |
| Random Totals: | 336,623,162 | 345,626,326 | 67 | 1,709 | ||
| CATG D1 EXCEPTION VALUES: | 2,733,531 | 1,588,031 | ||||
| Total Test Values | 339,356,693 | 347,214,357 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 17,360,718 |
Confidence Interval Values(5)
| Local Test Value: | 339,356,693 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 329,853,639 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 364,575,075 | (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