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091/Grayson
2018 Confidence Interval Detail
091/Grayson
091-908/Van Alstyne ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 86,813,550 | 0.9525 | 91,142,835 | 19 | 703 | .008566340 |
| A | 105,246,332 | 0.9736 | 108,100,177 | 39 | 509 | .004915953 |
| A | 132,461,445 | 0.9880 | 134,070,288 | 26 | 485 | .002514636 |
| A | 147,765,653 | 0.9803 | 150,735,135 | 19 | 362 | .005589550 |
| E | 127,191,607 | 0.9813 | 129,615,415 | 14 | 551 | .004449789 |
| F1 | 12,726,734 | 0.9522 | 13,365,610 | 9 | 79 | .016627400 |
| F1 | 12,065,454 | 0.7874 | 15,323,157 | 7 | 27 | .275064234 |
| F1 | 9,631,754 | 1.0787 | 8,929,039 | 6 | 10 | .040248306 |
| F1 | 18,071,620 | 1.0789 | 16,750,042 | 4 | 7 | .015941575 |
| Random Totals: | 651,974,149 | 668,031,698 | 143 | 2,733 | ||
| Catg D1 Exception Values: | 2,926,793 | 2,118,291 | ||||
| Total Test Values (4): | 654,900,942 | 670,149,989 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 33,507,499 |
Confidence Interval Values (5)
| State Lower Limit: | 636,642,490 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 654,900,942 | (Within Confidence Interval) |
| State Upper Limit: | 703,657,488 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 643,093,902 | (See ISD Summary Worksheet) |
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
(6) Includes local value of unstudied property categories and sub-categories