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057/Dallas
2018 Confidence Interval Detail
057/Dallas
057-912/Irving ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,412,387,680 | 0.9258 | 1,525,586,174 | 150 | 11,233 | .031481284 |
| A | 1,412,219,220 | 0.9606 | 1,470,142,848 | 150 | 8,290 | .020760378 |
| A | 1,412,599,260 | 0.9710 | 1,454,788,115 | 150 | 6,031 | .006661925 |
| A | 1,411,788,120 | 1.0100 | 1,397,810,020 | 150 | 2,643 | .015726745 |
| B | 497,159,610 | 0.8639 | 575,482,822 | 16 | 242 | .009766716 |
| B | 533,275,610 | 0.8357 | 638,118,476 | 9 | 45 | .010529933 |
| B | 565,978,920 | 0.9586 | 590,422,408 | 7 | 21 | .029391515 |
| B | 753,414,990 | 0.9406 | 800,994,036 | 5 | 14 | .007462677 |
| C1 | 79,117,710 | 0.8268 | 95,691,473 | 9 | 1,428 | .110033933 |
| C1 | 55,840,410 | 0.9577 | 58,306,787 | 9 | 146 | .047367379 |
| C1 | 51,156,720 | 0.8013 | 63,842,156 | 8 | 35 | .085390304 |
| C1 | 85,752,630 | 1.2596 | 68,079,255 | 5 | 14 | .181233685 |
| F1 | 844,622,850 | 0.9840 | 858,356,555 | 12 | 886 | .007167434 |
| F1 | 873,715,590 | 0.9191 | 950,620,814 | 8 | 175 | .006367871 |
| F1 | 811,467,730 | 0.9208 | 881,263,825 | 8 | 40 | .015586120 |
| F1 | 850,846,450 | 0.9360 | 909,023,985 | 5 | 12 | .006030730 |
| L1 | 352,811,330 | 1.0120 | 348,627,796 | 12 | 1,047 | .008843758 |
| L1 | 376,947,460 | 1.0207 | 369,302,890 | 11 | 173 | .007052937 |
| L1 | 405,286,860 | 0.9850 | 411,458,741 | 9 | 45 | .006305642 |
| L1 | 311,959,390 | 1.0029 | 311,057,324 | 4 | 7 | .001748201 |
| Random Totals: | 13,098,348,540 | 13,778,976,500 | 737 | 32,527 | ||
| Catg D1 Exception Values: | 76,491 | 78,626 | ||||
| Total Test Values (4): | 13,098,425,031 | 13,779,055,126 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 688,952,756 |
Confidence Interval Values (5)
| State Lower Limit: | 13,090,102,370 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 13,098,425,031 | (Within Confidence Interval) |
| State Upper Limit: | 14,468,007,882 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 11,980,042,811 | (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