2008 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 | 715,831,130 | 1.0216 | 700,696,094 | 35 | 8,754 | .031003559 |
| A | 737,640,140 | 1.0318 | 714,906,125 | 35 | 6,784 | .007307352 |
| A | 773,155,790 | 1.0163 | 760,755,476 | 35 | 5,614 | .002200503 |
| A | 779,364,720 | 1.0076 | 773,486,225 | 35 | 3,991 | .003828199 |
| B | 66,489,220 | 1.0467 | 63,522,709 | 8 | 952 | .011584196 |
| B | 61,355,560 | 1.1385 | 53,891,577 | 11 | 116 | .006067837 |
| B | 79,358,490 | 0.9989 | 79,445,880 | 4 | 13 | .001869961 |
| B | 73,700,930 | 0.8723 | 84,490,347 | 3 | 5 | .009611320 |
| F1 | 189,824,840 | 0.6937 | 273,641,113 | 7 | 516 | .071405683 |
| F1 | 205,017,240 | 0.9888 | 207,339,442 | 7 | 133 | .037657158 |
| F1 | 178,999,240 | 0.9348 | 191,483,997 | 6 | 37 | .013069394 |
| F1 | 235,777,740 | 0.9884 | 238,544,860 | 5 | 18 | .002274964 |
| L1 | 125,397,670 | 1.2718 | 98,598,577 | 7 | 498 | .012532451 |
| L1 | 141,658,620 | 1.1089 | 127,746,974 | 6 | 62 | .012634209 |
| L1 | 137,433,270 | 1.0105 | 136,005,215 | 5 | 15 | .000175046 |
| Random Totals: | 4,501,004,600 | 4,504,554,611 | 209 | 27,508 | ||
| Catg D1 Exception Values: | 138,303 | 142,080 | ||||
| Catg L1 Exception Values: | 90,168,910 | 90,670,310 | ||||
| Total Test Values (4): | 4,591,311,813 | 4,595,367,001 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 229,768,350 |
Confidence Interval Values (5)
| State Lower Limit: | 4,365,598,651 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,591,311,813 | (Within Confidence Interval) |
| State Upper Limit: | 4,825,135,351 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,910,211,640 | (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