2011 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 | 1,037,844,451 | 1.0302 | 1,007,420,356 | 50 | 12,934 | .033247725 |
| A | 957,594,908 | 0.9459 | 1,012,363,789 | 50 | 8,487 | .155226841 |
| A | 951,780,707 | 0.9781 | 973,091,409 | 50 | 6,236 | .006526392 |
| A | 1,064,863,811 | 0.9933 | 1,072,046,523 | 50 | 4,378 | .007045889 |
| B | 99,902,273 | 1.0557 | 94,631,309 | 13 | 571 | .037643419 |
| B | 129,629,777 | 0.8083 | 160,373,348 | 7 | 30 | .019195849 |
| B | 109,960,708 | 0.7642 | 143,889,961 | 5 | 12 | .001908582 |
| B | 145,439,620 | 0.9235 | 157,487,407 | 4 | 7 | .007020494 |
| F1 | 392,760,646 | 1.0026 | 391,742,116 | 11 | 948 | .006011941 |
| F1 | 386,281,187 | 0.8871 | 435,442,664 | 10 | 274 | .024603403 |
| F1 | 365,332,421 | 0.8740 | 418,000,482 | 9 | 89 | .024026001 |
| F1 | 383,448,343 | 0.8728 | 439,331,282 | 7 | 24 | .011014372 |
| L1 | 176,863,833 | 1.0281 | 172,029,796 | 10 | 1,024 | .004846290 |
| L1 | 179,031,360 | 1.0515 | 170,262,825 | 10 | 190 | .004934521 |
| L1 | 203,810,519 | 0.9482 | 214,944,652 | 8 | 53 | .046164543 |
| L1 | 192,076,024 | 1.0164 | 188,976,804 | 5 | 10 | .003488401 |
| Random Totals: | 6,776,620,588 | 7,052,034,723 | 299 | 35,267 | ||
| Catg D1 Exception Values: | 47,078 | 35,919 | ||||
| Total Test Values (4): | 6,776,667,666 | 7,052,070,642 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 352,603,532 |
Confidence Interval Values (5)
| State Lower Limit: | 6,699,467,110 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 6,776,667,666 | (Within Confidence Interval) |
| State Upper Limit: | 7,404,674,174 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 6,861,575,390 | (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