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Dallas County
2024 Confidence Interval Detail
Dallas County
057-912/Irving ISD
Category Summary
| (1) Category |
(1) Stratum Number |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|---|
| A | 2 | 1,421,580,460 | 0.9342 | 1,521,708,906 | 85 | 6,520 | 0.027931226 |
| A | 3 | 2,936,855,010 | 0.9731 | 3,018,040,294 | 100 | 10,611 | 0.011515118 |
| A | 4 | 3,571,242,190 | 0.9929 | 3,596,779,323 | 100 | 9,960 | 0.009057503 |
| A | 5 | 3,159,048,180 | 0.9664 | 3,268,882,637 | 100 | 4,436 | 0.008422740 |
| B | 2 | 1,136,589,920 | 1.0212 | 1,112,994,438 | 10 | 250 | 0.003906811 |
| B | 3 | 928,504,120 | 1.0022 | 926,465,895 | 9 | 37 | 0.011159988 |
| B | 4 | 1,488,324,070 | 1.1754 | 1,266,227,727 | 9 | 34 | 0.013717566 |
| B | 5 | 1,308,519,220 | 1.1549 | 1,133,015,170 | 6 | 15 | 0.005241274 |
| C1 | 2 | 89,513,400 | 0.6494 | 137,840,160 | 11 | 1,142 | 0.326455191 |
| C1 | 3 | 82,880,270 | 0.9238 | 89,716,681 | 11 | 219 | 0.022211012 |
| C1 | 4 | 66,831,920 | 0.9739 | 68,622,980 | 9 | 36 | 0.015342447 |
| C1 | 5 | 87,798,990 | 1.0689 | 82,139,573 | 6 | 9 | 0.018989448 |
| F1 | 2 | 1,249,013,730 | 0.9526 | 1,311,162,849 | 10 | 934 | 0.087496924 |
| F1 | 3 | 1,283,177,960 | 1.0078 | 1,273,246,636 | 10 | 205 | 0.014355578 |
| F1 | 4 | 1,266,231,740 | 0.9972 | 1,269,787,144 | 9 | 62 | 0.041709574 |
| F1 | 5 | 1,447,230,920 | 0.9363 | 1,545,691,466 | 6 | 21 | 0.021137495 |
| L1 | 2 | 641,646,060 | 1.0981 | 584,323,887 | 11 | 857 | 0.014811000 |
| L1 | 3 | 783,753,600 | 0.9922 | 789,914,937 | 11 | 132 | 0.003213058 |
| L1 | 4 | 705,303,920 | 1.0093 | 698,805,033 | 7 | 18 | 0.001615636 |
| L1 | 5 | 829,485,390 | 1.0050 | 825,358,597 | 3 | 4 | 0.000034414 |
| Random Totals: | 24,483,531,070 | 24,520,724,333 | 523 | 35,502 | |||
| CATG D1 EXCEPTION VALUES: | 91,770 | 82,857 | |||||
| CATG J EXCEPTION VALUES: | 3,537,727 | 3,663,872 | |||||
| Total Test Values | 24,487,160,567 | 24,524,471,062 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,226,223,553 |
Confidence Interval Values(5)
| Local Test Value: | 24,487,160,567 | WITHIN CONFIDENCE INTERVAL |
|---|---|---|
| State Lower Limit: | 23,298,247,509 | (State Test Value minus Margin of Error Percent) |
| State Upper Limit: | 25,750,694,615 | (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