2009 Confidence Interval Detail
220/Tarrant
061-911/Northwest ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 450,649,330 | 1.0167 | 443,247,103 | 24 | 3,276 | .003190557 |
| A | 407,039,408 | 1.0047 | 405,135,272 | 22 | 2,269 | .004152648 |
| A | 498,684,018 | 1.0113 | 493,111,854 | 24 | 1,978 | .006283695 |
| A | 396,728,428 | 1.0044 | 394,990,470 | 23 | 1,025 | .005266479 |
| F1 | 174,695,491 | 0.8582 | 203,560,348 | 8 | 185 | .012274728 |
| F1 | 127,568,404 | 0.8665 | 147,222,624 | 6 | 18 | .003852168 |
| F1 | 170,471,279 | 0.8622 | 197,716,631 | 5 | 14 | .005555691 |
| F1 | 230,896,319 | 0.8576 | 269,235,447 | 5 | 12 | .010035400 |
| G1 | 228,132,062 | 1.0510 | 217,061,905 | 9 | 247 | .002112670 |
| G1 | 230,425,755 | 0.9709 | 237,332,120 | 8 | 112 | .004807367 |
| G1 | 227,491,525 | 1.0196 | 223,118,404 | 9 | 68 | .000854346 |
| G1 | 226,190,713 | 0.9982 | 226,598,590 | 6 | 40 | .000686961 |
| L1 | 271,057,251 | 0.9890 | 274,072,043 | 6 | 78 | .011280025 |
| L1 | 186,258,244 | 1.0083 | 184,725,026 | 5 | 13 | .025247255 |
| L1 | 484,170,599 | 0.9751 | 496,534,303 | 4 | 15 | .034110694 |
| L1 | 290,097,098 | 1.0005 | 289,952,122 | 2 | 3 | .000000374 |
| Random Totals: | 4,600,555,924 | 4,703,614,262 | 166 | 9,353 | ||
| Catg D1 Exception Values: | 1,577,682 | 1,789,473 | ||||
| Catg L1 Exception Values: | 289,962,858 | 289,962,858 | ||||
| Total Test Values (4): | 4,892,096,464 | 4,995,366,593 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 249,768,330 |
Confidence Interval Values (5)
| State Lower Limit: | 4,745,598,263 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,892,096,464 | (Within Confidence Interval) |
| State Upper Limit: | 5,245,134,923 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,512,055,597 | (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