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220/Tarrant
2016 Confidence Interval Detail
220/Tarrant
220-906/Grapevine-Colleyville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,803,509,194 | 0.9512 | 1,896,035,738 | 150 | 7,195 | .013017016 |
| A | 1,803,716,267 | 0.9587 | 1,881,418,866 | 144 | 5,069 | .007242350 |
| A | 1,803,516,033 | 0.9754 | 1,849,001,469 | 150 | 3,708 | .007505671 |
| A | 1,803,100,280 | 0.9963 | 1,809,796,527 | 98 | 2,141 | .018659315 |
| B | 367,285,310 | 0.9595 | 382,788,233 | 41 | 929 | .003777759 |
| B | 215,263,493 | 1.0552 | 204,002,552 | 5 | 9 | .007741357 |
| B | 236,230,587 | 0.9995 | 236,348,761 | 5 | 6 | .011805064 |
| F1 | 640,884,529 | 1.0752 | 596,060,760 | 10 | 601 | .136748012 |
| F1 | 636,226,198 | 0.9675 | 657,598,137 | 7 | 175 | .004298509 |
| F1 | 731,854,354 | 1.0102 | 724,464,813 | 7 | 63 | .005100673 |
| F1 | 653,900,896 | 1.0381 | 629,901,643 | 3 | 4 | .032563530 |
| L1 | 483,027,920 | 1.0063 | 480,003,895 | 10 | 490 | .001543580 |
| L1 | 414,968,836 | 1.0315 | 402,296,496 | 8 | 37 | .034427312 |
| L1 | 354,301,680 | 1.0366 | 341,792,090 | 5 | 9 | .002764511 |
| L1 | 442,469,713 | 0.8621 | 513,246,390 | 2 | 6 | .036418973 |
| Random Totals: | 12,390,255,290 | 12,604,756,370 | 645 | 20,442 | ||
| Catg D1 Exception Values: | 68,436 | 42,639 | ||||
| Catg B Exception Values: | 270,754,880 | 256,692,184 | ||||
| Catg L1 Exception Values: | 579,233,202 | 489,832,366 | ||||
| Total Test Values (4): | 13,240,311,808 | 13,351,323,559 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 667,566,177 |
Confidence Interval Values (5)
| State Lower Limit: | 12,683,757,382 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 13,240,311,808 | (Within Confidence Interval) |
| State Upper Limit: | 14,018,889,736 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 12,263,187,882 | (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, D3, 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