2011 Confidence Interval Detail
220/Tarrant
220-901/Arlington ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,410,444,978 | 0.9965 | 2,418,911,167 | 75 | 27,374 | .011278549 |
| A | 2,360,450,684 | 0.9914 | 2,380,926,653 | 75 | 19,232 | .008093757 |
| A | 2,419,647,589 | 0.9929 | 2,436,949,934 | 75 | 14,774 | .014010138 |
| A | 2,384,461,616 | 0.9647 | 2,471,713,088 | 75 | 8,300 | .012349130 |
| B | 412,947,376 | 0.8687 | 475,362,468 | 27 | 2,392 | .208908101 |
| B | 382,592,650 | 0.9069 | 421,868,618 | 9 | 89 | .048097871 |
| B | 412,062,733 | 0.9588 | 429,769,225 | 8 | 50 | .007126822 |
| B | 541,106,554 | 0.8784 | 616,013,837 | 7 | 24 | .008077749 |
| F1 | 1,151,544,236 | 0.9938 | 1,158,728,352 | 10 | 1,718 | .018691245 |
| F1 | 1,128,037,932 | 0.8551 | 1,319,188,319 | 10 | 511 | .040975959 |
| F1 | 1,112,185,305 | 0.8734 | 1,273,397,418 | 10 | 200 | .032761738 |
| F1 | 1,155,658,306 | 0.8650 | 1,336,021,163 | 9 | 62 | .017658424 |
| L1 | 572,450,825 | 1.0306 | 555,453,935 | 10 | 2,315 | .004255857 |
| L1 | 563,635,482 | 1.0053 | 560,663,963 | 10 | 368 | .002849578 |
| L1 | 560,011,292 | 1.0259 | 545,873,177 | 9 | 109 | .003679720 |
| L1 | 670,841,270 | 1.0078 | 665,649,206 | 7 | 29 | .000766679 |
| Random Totals: | 18,238,078,828 | 19,066,490,523 | 426 | 77,547 | ||
| Catg J Exception Values: | 76,290,135 | 70,450,761 | ||||
| Catg D1 Exception Values: | 97,600 | 114,359 | ||||
| Total Test Values (4): | 18,314,466,563 | 19,137,055,643 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 956,852,782 |
Confidence Interval Values (5)
| State Lower Limit: | 18,180,202,861 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 18,314,466,563 | (Within Confidence Interval) |
| State Upper Limit: | 20,093,908,425 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 19,011,696,264 | (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