2008 Confidence Interval Detail
072/Erath
072-902/Dublin ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 17,865,200 | 0.8611 | 20,746,952 | 16 | 536 | .134072061 |
| A | 18,268,220 | 0.9726 | 18,782,871 | 16 | 314 | .020772516 |
| A | 18,034,150 | 0.9285 | 19,422,886 | 15 | 211 | .018736073 |
| A | 18,654,510 | 0.9535 | 19,564,248 | 16 | 137 | .004058501 |
| D3 | 122,148,250 | 0.9566 | 127,689,996 | 23 | 3,273 | .028371106 |
| F1 | 4,878,670 | 1.0169 | 4,797,591 | 10 | 91 | .012427539 |
| F1 | 4,751,400 | 0.9898 | 4,800,364 | 9 | 33 | .001483847 |
| F1 | 5,354,180 | 0.9677 | 5,532,892 | 7 | 16 | .005732557 |
| F1 | 5,113,180 | 0.9967 | 5,130,109 | 4 | 7 | .000379666 |
| L1 | 2,940,850 | 0.9380 | 3,135,235 | 6 | 83 | .015271268 |
| L1 | 3,339,300 | 0.9852 | 3,389,464 | 5 | 22 | .002387872 |
| L1 | 3,521,590 | 0.9894 | 3,559,319 | 5 | 9 | .001108030 |
| L1 | 1,841,920 | 0.9965 | 1,848,389 | 2 | 2 | .000082619 |
| Random Totals: | 226,711,420 | 238,400,316 | 134 | 4,734 | ||
| Catg J Exception Values: | 5,289,650 | 5,346,480 | ||||
| Catg D1 Exception Values: | 17,274,470 | 12,003,322 | ||||
| Total Test Values (4): | 249,275,540 | 255,750,118 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 12,787,506 |
Confidence Interval Values (5)
| State Lower Limit: | 242,962,612 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 249,275,540 | (Within Confidence Interval) |
| State Upper Limit: | 268,537,624 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 245,396,811 | (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