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220/Tarrant
2017 Confidence Interval Detail
220/Tarrant
220-905/Fort Worth ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 4,096,347,374 | 0.9115 | 4,494,072,818 | 606 | 50,030 | .019835517 |
| A | 5,535,115,498 | 0.9524 | 5,811,755,038 | 1,412 | 33,547 | .013567583 |
| A | 5,001,241,510 | 0.9572 | 5,224,865,765 | 705 | 14,603 | .011466097 |
| A | 5,205,887,742 | 0.9508 | 5,475,271,079 | 193 | 6,000 | .012918096 |
| B | 787,667,344 | 0.9908 | 794,981,171 | 75 | 3,041 | .140818790 |
| B | 814,131,664 | 1.1789 | 690,585,855 | 13 | 109 | .059249869 |
| B | 1,118,059,547 | 1.0381 | 1,077,024,898 | 10 | 57 | .020241740 |
| B | 1,191,132,646 | 0.9925 | 1,200,133,648 | 7 | 23 | .003775956 |
| C1 | 134,819,076 | 0.9205 | 146,462,875 | 37 | 5,149 | .086889764 |
| C1 | 156,221,703 | 0.9091 | 171,842,155 | 21 | 941 | .027735967 |
| C1 | 159,280,385 | 0.9675 | 164,630,889 | 11 | 359 | .051806094 |
| C1 | 208,246,869 | 0.9552 | 218,013,891 | 10 | 142 | .007138759 |
| F1 | 1,689,022,553 | 1.0065 | 1,678,114,807 | 29 | 3,496 | .079771185 |
| F1 | 1,956,726,235 | 0.9570 | 2,044,646,014 | 16 | 820 | .029821329 |
| F1 | 1,900,279,343 | 0.8909 | 2,132,988,375 | 9 | 197 | .008395132 |
| F1 | 2,438,951,657 | 0.8391 | 2,906,628,122 | 9 | 50 | .005098279 |
| L1 | 817,100,788 | 0.9572 | 853,636,427 | 13 | 3,017 | .034106971 |
| L1 | 867,720,133 | 1.0617 | 817,293,146 | 11 | 433 | .005325258 |
| L1 | 843,600,828 | 1.0976 | 768,586,760 | 10 | 110 | .015000972 |
| L1 | 937,173,492 | 1.1367 | 824,468,630 | 9 | 31 | .103294568 |
| Random Totals: | 35,858,726,387 | 37,496,002,363 | 3,206 | 122,155 | ||
| Catg J Exception Values: | 180,086,640 | 168,156,848 | ||||
| Catg D1 Exception Values: | 1,592,062 | 652,662 | ||||
| Total Test Values (4): | 36,040,405,089 | 37,664,811,873 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,883,240,593 |
Confidence Interval Values (5)
| State Lower Limit: | 35,781,571,280 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 36,040,405,089 | (Within Confidence Interval) |
| State Upper Limit: | 39,548,052,466 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 33,528,922,568 | (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