2010 Confidence Interval Detail
057/Dallas
057-922/Coppell ISD
Category Summary
| (1) Category |
(1) Local Value |
(1) Stratum Ratio |
(1) State Value |
(2) Sample Size |
(3) Total Parcels |
Stratum Variance |
|---|---|---|---|---|---|---|
| A | 801,659,670 | 0.9907 | 809,185,091 | 49 | 4,131 | .002870551 |
| A | 871,591,660 | 0.9732 | 895,593,568 | 49 | 3,162 | .001986793 |
| A | 853,433,260 | 0.9670 | 882,557,663 | 50 | 2,447 | .002532098 |
| A | 867,881,620 | 0.9722 | 892,698,642 | 50 | 1,618 | .003321475 |
| F1 | 599,931,520 | 0.8664 | 692,441,736 | 10 | 194 | .035598213 |
| F1 | 574,900,150 | 0.9056 | 634,827,904 | 10 | 72 | .004061675 |
| F1 | 466,569,630 | 0.9350 | 499,004,952 | 8 | 33 | .005378517 |
| F1 | 395,520,480 | 1.0113 | 391,101,038 | 7 | 15 | .009813988 |
| L1 | 389,719,530 | 1.0351 | 376,504,231 | 10 | 296 | .017349681 |
| L1 | 393,135,510 | 0.9972 | 394,239,380 | 9 | 63 | .004667173 |
| L1 | 348,085,060 | 1.0008 | 347,806,815 | 7 | 21 | .002495966 |
| L1 | 201,419,060 | 0.9513 | 211,730,327 | 5 | 6 | .015283896 |
| Random Totals: | 6,763,847,150 | 7,027,691,347 | 264 | 12,058 | ||
| Catg J Exception Values: | 75,103,501 | 72,147,147 | ||||
| Catg D1 Exception Values: | 216,079 | 146,952 | ||||
| Total Test Values (4): | 6,839,166,730 | 7,099,985,446 |
Margin of Error
| Margin of Error Percent: | 5.0000000 |
|---|---|
| Margin of Error Value: | 354,999,272 |
Confidence Interval Values (5)
| State Lower Limit: | 6,744,986,174 | (State Test Value minus Margin of Error Percent) |
|---|---|---|
| Local Test Value: | 6,839,166,730 | (Within Confidence Interval) |
| State Upper Limit: | 7,454,984,718 | (State Test Value plus Margin of Error Percent) |
| Value Assigned (6): | 7,171,140,996 | (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