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220/Tarrant
2017 Confidence Interval Detail
220/Tarrant
220-902/Birdville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 1,117,115,565 | 0.9466 | 1,180,134,761 | 131 | 10,336 | .017155220 |
| A | 1,590,998,164 | 0.9762 | 1,629,787,097 | 144 | 10,631 | .017190120 |
| A | 1,629,719,882 | 0.9703 | 1,679,604,124 | 146 | 7,903 | .012868780 |
| A | 2,000,464,810 | 0.9792 | 2,042,958,344 | 141 | 6,126 | .007568726 |
| B | 186,858,027 | 1.1294 | 165,448,935 | 17 | 550 | .004749477 |
| B | 165,185,447 | 0.9771 | 169,056,849 | 7 | 14 | .045702416 |
| B | 305,228,220 | 0.9846 | 310,002,255 | 6 | 15 | .017341555 |
| B | 463,133,852 | 1.0744 | 431,062,781 | 5 | 13 | .008300471 |
| F1 | 397,716,929 | 0.8973 | 443,237,411 | 8 | 852 | .043485836 |
| F1 | 428,708,495 | 0.8670 | 494,473,466 | 10 | 296 | .040907248 |
| F1 | 465,433,919 | 0.9066 | 513,383,983 | 10 | 116 | .063585090 |
| F1 | 580,893,405 | 0.8096 | 717,506,676 | 8 | 38 | .005298483 |
| L1 | 212,320,484 | 1.0700 | 198,430,359 | 11 | 1,012 | .009515426 |
| L1 | 213,140,907 | 1.1091 | 192,174,652 | 11 | 188 | .045982124 |
| L1 | 205,588,961 | 0.9849 | 208,740,949 | 9 | 54 | .006819638 |
| L1 | 252,007,466 | 0.9015 | 279,542,392 | 4 | 13 | .016129564 |
| Random Totals: | 10,214,514,533 | 10,655,545,034 | 668 | 38,157 | ||
| Catg D1 Exception Values: | 43,966 | 28,397 | ||||
| Total Test Values (4): | 10,214,558,499 | 10,655,573,431 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 532,778,671 |
Confidence Interval Values (5)
| State Lower Limit: | 10,122,794,760 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 10,214,558,499 | (Within Confidence Interval) |
| State Upper Limit: | 11,188,352,102 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 9,111,589,224 | (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