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Grayson County
2020 Confidence Interval Detail
Grayson County
091-902/Collinsville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 29,417,839 | 0.9247 | 31,813,387 | 10 | 282 | 0.006003438 |
| A | 31,268,402 | 0.9575 | 32,656,295 | 14 | 209 | 0.003954670 |
| A | 34,061,953 | 0.9833 | 34,640,448 | 10 | 172 | 0.003396136 |
| A | 45,134,662 | 1.0659 | 42,344,181 | 11 | 145 | 0.070403031 |
| E | 78,155,643 | 1.0701 | 73,035,831 | 20 | 414 | 0.019791694 |
| Random Totals: | 218,038,499 | 214,490,142 | 65 | 1,222 | ||
| CATG D1 EXCEPTION VALUES: | 2,899,347 | 1,807,939 | ||||
| CATG J EXCEPTION VALUES: | 9,402,614 | 10,479,276 | ||||
| Total Test Values | 230,340,460 | 226,777,357 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 11,338,868 |
Confidence Interval Values(5)
| Local Test Value: | 230,340,460 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 215,438,489 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 238,116,225 | (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