2009 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 | 737,764,550 | 1.0115 | 729,376,718 | 45 | 9,014 | .009455804 |
| A | 632,797,440 | 0.9653 | 655,544,846 | 45 | 5,673 | .009880553 |
| A | 737,273,390 | 1.0125 | 728,171,249 | 45 | 5,281 | .013793037 |
| A | 687,134,230 | 1.0178 | 675,117,145 | 45 | 3,520 | .010100938 |
| B | 65,425,610 | 1.1145 | 58,704,002 | 16 | 911 | .105319170 |
| B | 67,794,250 | 0.9747 | 69,553,965 | 7 | 65 | .010614889 |
| B | 65,219,310 | 0.9683 | 67,354,446 | 4 | 10 | .029012314 |
| B | 48,866,770 | 1.0313 | 47,383,661 | 3 | 3 | .000266845 |
| F1 | 199,135,750 | 0.9687 | 205,570,094 | 8 | 504 | .015555766 |
| F1 | 220,657,730 | 0.9209 | 239,610,957 | 7 | 129 | .009430541 |
| F1 | 188,448,810 | 0.8916 | 211,360,262 | 7 | 35 | .013208161 |
| F1 | 257,510,690 | 0.9511 | 270,750,384 | 5 | 18 | .004638120 |
| L1 | 132,118,240 | 1.1094 | 119,089,814 | 7 | 446 | .038108831 |
| L1 | 131,639,700 | 1.0151 | 129,681,509 | 6 | 51 | .001995154 |
| L1 | 201,417,710 | 1.0079 | 199,838,982 | 5 | 19 | .000154512 |
| L1 | 104,215,010 | 1.0087 | 103,316,159 | 2 | 3 | .000170858 |
| Random Totals: | 4,477,419,190 | 4,510,424,193 | 257 | 25,682 | ||
| Catg D1 Exception Values: | 151,664 | 155,531 | ||||
| Total Test Values (4): | 4,477,570,854 | 4,510,579,724 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 225,528,986 |
Confidence Interval Values (5)
| State Lower Limit: | 4,285,050,738 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,477,570,854 | (Within Confidence Interval) |
| State Upper Limit: | 4,736,108,710 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,636,012,728 | (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