2009 Confidence Interval Detail
057/Dallas
057-909/Garland ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 2,371,554,150 | 1.0068 | 2,355,536,502 | 46 | 24,885 | .006359220 |
| A | 2,134,935,630 | 0.9885 | 2,159,773,020 | 54 | 17,088 | .002637671 |
| A | 2,376,574,140 | 0.9816 | 2,421,122,800 | 50 | 14,584 | .005797081 |
| A | 2,233,920,240 | 0.9873 | 2,262,655,971 | 49 | 8,898 | .006503610 |
| B | 173,826,930 | 1.0297 | 168,813,179 | 15 | 867 | .003571970 |
| B | 170,886,970 | 1.0518 | 162,470,974 | 6 | 48 | .019216104 |
| B | 146,473,300 | 0.9320 | 157,160,193 | 5 | 17 | .005150572 |
| B | 109,420,710 | 0.9700 | 112,804,856 | 4 | 6 | .003720581 |
| C | 76,209,220 | 1.1254 | 67,717,452 | 7 | 1,588 | .046322082 |
| C | 74,226,570 | 0.9506 | 78,083,915 | 7 | 330 | .017185159 |
| C | 71,854,930 | 0.9682 | 74,214,966 | 7 | 102 | .010932958 |
| C | 62,483,780 | 1.0183 | 61,360,876 | 6 | 22 | .005647522 |
| F1 | 604,072,840 | 0.8029 | 752,363,731 | 8 | 1,240 | .047349297 |
| F1 | 607,318,820 | 0.9169 | 662,361,021 | 7 | 333 | .019288450 |
| F1 | 603,871,390 | 0.8998 | 671,117,348 | 7 | 123 | .013618438 |
| F1 | 490,786,340 | 0.9318 | 526,707,813 | 6 | 33 | .018966480 |
| L1 | 242,983,740 | 1.0112 | 240,292,464 | 7 | 1,462 | .028731233 |
| L1 | 237,017,310 | 1.0798 | 219,501,121 | 7 | 234 | .008335693 |
| L1 | 253,295,500 | 1.0951 | 231,298,968 | 6 | 59 | .015233939 |
| L1 | 219,751,860 | 1.0187 | 215,717,935 | 5 | 13 | .000690954 |
| Random Totals: | 13,261,464,370 | 13,601,075,105 | 309 | 71,932 | ||
| Catg D1 Exception Values: | 472,856 | 459,246 | ||||
| Total Test Values (4): | 13,261,937,226 | 13,601,534,351 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 680,076,718 |
Confidence Interval Values (5)
| State Lower Limit: | 12,921,457,633 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 13,261,937,226 | (Within Confidence Interval) |
| State Upper Limit: | 14,281,611,069 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 13,688,726,454 | (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