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Grayson County
2020 Confidence Interval Detail
Grayson County
091-901/Bells ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 32,162,538 | 0.9681 | 33,222,330 | 12 | 333 | 0.031211479 |
| A | 30,833,660 | 0.9711 | 31,751,272 | 10 | 192 | 0.011828937 |
| A | 45,785,447 | 0.9770 | 46,863,303 | 14 | 213 | 0.010344184 |
| A | 77,270,909 | 0.9236 | 83,662,743 | 10 | 158 | 0.034402152 |
| E | 106,304,690 | 1.0232 | 103,894,341 | 20 | 577 | 0.005232040 |
| Random Totals: | 292,357,244 | 299,393,989 | 66 | 1,473 | ||
| CATG D1 EXCEPTION VALUES: | 2,017,201 | 983,280 | ||||
| CATG J EXCEPTION VALUES: | 7,299,317 | 7,866,469 | ||||
| Total Test Values | 301,673,762 | 308,243,738 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 15,412,187 |
Confidence Interval Values(5)
| Local Test Value: | 301,673,762 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 292,831,551 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 323,655,925 | (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