2011 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 | 3,422,364,906 | 0.9712 | 3,523,851,839 | 100 | 53,009 | .045120539 |
| A | 3,357,417,680 | 1.0031 | 3,347,041,850 | 100 | 26,542 | .013487529 |
| A | 3,505,479,963 | 0.9845 | 3,560,670,353 | 100 | 13,671 | .009670100 |
| A | 3,470,675,596 | 0.9439 | 3,676,952,639 | 100 | 4,752 | .051095581 |
| B | 382,036,986 | 1.0127 | 377,245,962 | 44 | 3,659 | .010312364 |
| B | 377,369,901 | 0.8406 | 448,929,218 | 10 | 371 | .030210999 |
| B | 382,056,890 | 0.8238 | 463,773,841 | 9 | 73 | .022575907 |
| B | 547,567,345 | 0.8724 | 627,656,287 | 7 | 27 | .012323111 |
| C | 110,789,767 | 0.8692 | 127,461,766 | 14 | 6,682 | .219400947 |
| C | 108,895,248 | 0.8896 | 122,409,227 | 10 | 1,152 | .075549762 |
| C | 114,801,007 | 0.7684 | 149,402,664 | 10 | 361 | .096390788 |
| C | 110,673,137 | 0.9103 | 121,578,751 | 11 | 89 | .018805625 |
| F1 | 1,477,053,194 | 0.9656 | 1,529,673,979 | 12 | 3,990 | .055281369 |
| F1 | 1,448,349,582 | 0.9453 | 1,532,158,661 | 10 | 804 | .025223083 |
| F1 | 1,499,140,855 | 0.8898 | 1,684,806,535 | 10 | 208 | .007683485 |
| F1 | 1,539,210,059 | 0.8811 | 1,746,918,691 | 8 | 42 | .002005121 |
| G1 | 212,188,361 | 0.9437 | 224,847,262 | 12 | 190 | .014346441 |
| G1 | 211,740,059 | 0.9947 | 212,868,261 | 10 | 88 | .003020281 |
| G1 | 211,384,397 | 1.0062 | 210,081,889 | 8 | 54 | .005184300 |
| G1 | 209,455,844 | 0.9998 | 209,497,744 | 8 | 34 | .003756651 |
| L1 | 732,841,916 | 0.9920 | 738,751,931 | 10 | 3,321 | .002895076 |
| L1 | 721,610,391 | 1.0928 | 660,331,617 | 10 | 460 | .015877901 |
| L1 | 749,074,248 | 1.0094 | 742,098,522 | 9 | 121 | .002515320 |
| L1 | 793,263,331 | 1.0297 | 770,382,957 | 7 | 28 | .002573938 |
| Random Totals: | 25,695,440,663 | 26,809,392,446 | 629 | 119,728 | ||
| Catg J Exception Values: | 239,976,946 | 239,179,033 | ||||
| Catg D1 Exception Values: | 1,493,360 | 948,011 | ||||
| Total Test Values (4): | 25,936,910,969 | 27,049,519,490 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 1,352,475,975 |
Confidence Interval Values (5)
| State Lower Limit: | 25,697,043,515 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 25,936,910,969 | (Within Confidence Interval) |
| State Upper Limit: | 28,401,995,465 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 25,175,148,246 | (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