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057/Dallas
2018 Confidence Interval Detail
057/Dallas
057-907/Duncanville ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 764,744,900 | 0.9403 | 813,298,841 | 73 | 6,008 | .017323246 |
| A | 764,704,160 | 0.9687 | 789,412,780 | 75 | 4,714 | .012113252 |
| A | 764,640,140 | 0.9786 | 781,361,271 | 75 | 3,787 | .020932167 |
| A | 764,510,090 | 0.9754 | 783,791,357 | 75 | 2,652 | .003786231 |
| B | 84,125,780 | 0.8997 | 93,504,257 | 11 | 276 | .025642350 |
| B | 80,889,750 | 0.8506 | 95,097,284 | 5 | 10 | .008047590 |
| B | 64,995,470 | 0.8135 | 79,896,091 | 3 | 6 | .017624884 |
| F1 | 183,839,800 | 0.8857 | 207,564,412 | 10 | 413 | .034199588 |
| F1 | 190,241,200 | 0.8931 | 213,012,205 | 9 | 140 | .020014312 |
| F1 | 207,485,620 | 0.8995 | 230,667,727 | 10 | 57 | .009609991 |
| F1 | 163,457,420 | 0.9695 | 168,599,711 | 6 | 14 | .023382086 |
| L1 | 100,803,380 | 1.0716 | 94,068,104 | 11 | 335 | .007441960 |
| L1 | 84,593,960 | 1.0469 | 80,804,241 | 9 | 45 | .015215803 |
| L1 | 82,796,770 | 1.0312 | 80,291,670 | 6 | 11 | .009989705 |
| L1 | 150,215,280 | 1.0033 | 149,721,200 | 2 | 7 | .000151463 |
| Random Totals: | 4,452,043,720 | 4,661,091,151 | 380 | 18,475 | ||
| Catg D1 Exception Values: | 82,414 | 73,688 | ||||
| Catg B Exception Values: | 114,452,110 | 133,222,262 | ||||
| Total Test Values (4): | 4,566,578,244 | 4,794,387,101 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 239,719,355 |
Confidence Interval Values (5)
| State Lower Limit: | 4,554,667,746 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 4,566,578,244 | (Within Confidence Interval) |
| State Upper Limit: | 5,034,106,456 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 4,575,063,971 | (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, D2, E, 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