2011 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 | 499,832,629 | 1.0179 | 491,042,960 | 15 | 3,996 | .004796198 |
| A | 461,120,540 | 0.9909 | 465,355,273 | 15 | 2,761 | .019960648 |
| A | 463,035,008 | 1.0040 | 461,190,247 | 15 | 1,972 | .003216843 |
| A | 492,628,393 | 0.9965 | 494,358,648 | 15 | 1,386 | .008050495 |
| F1 | 171,914,989 | 0.7738 | 222,169,797 | 9 | 193 | .046544779 |
| F1 | 147,725,759 | 0.9332 | 158,300,213 | 7 | 21 | .009792234 |
| F1 | 193,535,822 | 0.9192 | 210,548,109 | 6 | 15 | .013531989 |
| F1 | 256,576,024 | 0.9593 | 267,461,716 | 4 | 10 | .009368616 |
| G1 | 198,412,896 | 1.0320 | 192,260,558 | 12 | 260 | .019482220 |
| G1 | 198,838,041 | 1.0483 | 189,676,658 | 12 | 120 | .004099562 |
| G1 | 198,994,972 | 1.0349 | 192,284,252 | 9 | 74 | .031263273 |
| G1 | 194,434,045 | 1.0162 | 191,334,427 | 8 | 39 | .004962388 |
| L1 | 326,940,929 | 1.0641 | 307,246,433 | 8 | 79 | .005638778 |
| L1 | 309,617,321 | 1.0066 | 307,587,245 | 6 | 14 | .000124280 |
| L1 | 444,126,645 | 1.0079 | 440,645,545 | 3 | 6 | .000231952 |
| Random Totals: | 4,557,734,013 | 4,591,462,081 | 144 | 10,946 | ||
| Catg D1 Exception Values: | 1,673,882 | 1,381,976 | ||||
| Catg L1 Exception Values: | 581,129,214 | 581,129,214 | ||||
| Total Test Values (4): | 5,140,537,109 | 5,173,973,271 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 258,698,664 |
Confidence Interval Values (5)
| State Lower Limit: | 4,915,274,607 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 5,140,537,109 | (Within Confidence Interval) |
| State Upper Limit: | 5,432,671,935 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,605,654,134 | (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