2010 Confidence Interval Detail
057/Dallas
057-910/Grand Prairie ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 735,338,250 | 0.9751 | 754,115,732 | 25 | 9,639 | .007051589 |
| A | 723,439,260 | 0.9870 | 732,967,842 | 25 | 6,679 | .003868742 |
| A | 664,156,200 | 1.0251 | 647,894,059 | 25 | 4,809 | .004087123 |
| A | 658,737,340 | 1.0246 | 642,921,472 | 25 | 3,480 | .003060184 |
| B | 21,118,850 | 0.9411 | 22,440,601 | 12 | 294 | .039904076 |
| B | 65,358,870 | 1.0270 | 63,640,574 | 9 | 87 | .008276646 |
| B | 29,708,710 | 0.9001 | 33,006,010 | 5 | 5 | .011080127 |
| F1 | 220,975,170 | 0.7507 | 294,358,825 | 10 | 514 | .389269421 |
| F1 | 201,799,080 | 0.9424 | 214,133,149 | 9 | 110 | .007978134 |
| F1 | 249,713,570 | 1.0131 | 246,484,621 | 9 | 38 | .001053526 |
| F1 | 156,927,650 | 0.9960 | 157,557,882 | 6 | 10 | .006342425 |
| L1 | 150,329,260 | 0.9919 | 151,556,871 | 10 | 438 | .018094263 |
| L1 | 143,369,400 | 1.1218 | 127,802,995 | 8 | 46 | .008939034 |
| L1 | 206,012,790 | 1.0076 | 204,458,902 | 6 | 17 | .004645225 |
| L1 | 138,707,570 | 1.0451 | 132,721,816 | 3 | 5 | .000901774 |
| Random Totals: | 4,365,691,970 | 4,426,061,351 | 187 | 26,171 | ||
| Catg J Exception Values: | 117,420,040 | 123,613,151 | ||||
| Catg D1 Exception Values: | 147,952 | 141,359 | ||||
| Catg B Exception Values: | 62,600,000 | 65,414,800 | ||||
| Total Test Values (4): | 4,545,859,962 | 4,615,230,661 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 230,761,533 |
Confidence Interval Values (5)
| State Lower Limit: | 4,384,469,128 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,545,859,962 | (Within Confidence Interval) |
| State Upper Limit: | 4,845,992,194 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,663,419,158 | (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